Bump undici from 6.19.8 to 6.21.1 in /website (#459)

Bumps [undici](https://github.com/nodejs/undici) from 6.19.8 to 6.21.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/nodejs/undici/releases">undici's
releases</a>.</em></p>
<blockquote>
<h2>v6.21.1</h2>
<h1>⚠️ Security Release ⚠️</h1>
<p>Fixes CVE CVE-2025-22150 <a
href="https://github.com/nodejs/undici/security/advisories/GHSA-c76h-2ccp-4975">https://github.com/nodejs/undici/security/advisories/GHSA-c76h-2ccp-4975</a>
(embargoed until 22-01-2025).</p>
<h2>What's Changed</h2>
<ul>
<li>fix(<a
href="https://redirect.github.com/nodejs/undici/issues/3736">#3736</a>):
back-port 183f8e9 to v6.x by <a
href="https://github.com/ggoodman"><code>@​ggoodman</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3855">nodejs/undici#3855</a></li>
<li>fix(<a
href="https://redirect.github.com/nodejs/undici/issues/3817">#3817</a>):
send servername for SNI on TLS (<a
href="https://redirect.github.com/nodejs/undici/issues/3821">#3821</a>)
[backport] by <a
href="https://github.com/metcoder95"><code>@​metcoder95</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3864">nodejs/undici#3864</a></li>
<li>fix: sending formdata bodies with http2 (<a
href="https://redirect.github.com/nodejs/undici/issues/3863">#3863</a>)
[backport] by <a
href="https://github.com/metcoder95"><code>@​metcoder95</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3866">nodejs/undici#3866</a></li>
<li>[Backport v6.x] fix: Fixed the issue that there is no running
request when http2 goaway by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3877">nodejs/undici#3877</a></li>
<li>types: [backport] Update return type of RetryCallback (<a
href="https://redirect.github.com/nodejs/undici/issues/3851">#3851</a>)
by <a href="https://github.com/metcoder95"><code>@​metcoder95</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3876">nodejs/undici#3876</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/nodejs/undici/compare/v6.21.0...v6.21.1">https://github.com/nodejs/undici/compare/v6.21.0...v6.21.1</a></p>
<h2>v6.21.0</h2>
<h2>What's Changed</h2>
<ul>
<li>[Backport v6.x] web: mark as uncloneable when possible (<a
href="https://redirect.github.com/nodejs/undici/issues/3709">#3709</a>)
by <a href="https://github.com/jazelly"><code>@​jazelly</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3744">nodejs/undici#3744</a></li>
<li>[Backport v6.x] fetch: fix content-encoding order by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3764">nodejs/undici#3764</a></li>
<li>[Backport v6.x] fix: handle undefined deref() of WeakRef(socket) by
<a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3822">nodejs/undici#3822</a></li>
<li>[Backport v6.x] fix: range end is zero-indexed by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3827">nodejs/undici#3827</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/nodejs/undici/compare/v6.20.1...v6.21.0">https://github.com/nodejs/undici/compare/v6.20.1...v6.21.0</a></p>
<h2>v6.20.1</h2>
<h2>What's Changed</h2>
<ul>
<li>[Backport v6.x] jsdoc: add jsdoc to lib/web/fetch/constants.js by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3710">nodejs/undici#3710</a></li>
<li>[Backport v6.x] feat: implement <code>BodyReadable.bytes</code> by
<a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3711">nodejs/undici#3711</a></li>
<li>fix: add more expectsPayload methods by <a
href="https://github.com/ronag"><code>@​ronag</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3715">nodejs/undici#3715</a></li>
<li>[Backport v6.x] chore(H2): onboard H2 into Undici queueing system
(<a
href="https://redirect.github.com/nodejs/undici/issues/3707">#3707</a>)
by <a href="https://github.com/Uzlopak"><code>@​Uzlopak</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3724">nodejs/undici#3724</a></li>
<li>[Backport v6.x] fix: PoolBase kClose and kDestroy should await and
not return the Promise by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3723">nodejs/undici#3723</a></li>
<li>[Backport v6.x] fix: extract noop everywhere by <a
href="https://github.com/Uzlopak"><code>@​Uzlopak</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3727">nodejs/undici#3727</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/nodejs/undici/compare/v6.20.0...v6.20.1">https://github.com/nodejs/undici/compare/v6.20.0...v6.20.1</a></p>
<h2>v6.20.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Remove patched dom types (<code>v6.x</code> branch) by <a
href="https://github.com/eXhumer"><code>@​eXhumer</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3531">nodejs/undici#3531</a></li>
<li>docs(Backport v6.x): Fix signature of RetryHandler by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3594">nodejs/undici#3594</a></li>
<li>deps(dev): update <code>@​types/node</code> by <a
href="https://github.com/metcoder95"><code>@​metcoder95</code></a> in <a
href="https://redirect.github.com/nodejs/undici/pull/3618">nodejs/undici#3618</a></li>
<li>fix: throw on retry when payload is consume by downstream by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3596">nodejs/undici#3596</a></li>
<li>feat(Backport v6.x): move throwOnError to interceptor by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3595">nodejs/undici#3595</a></li>
<li>[Backport v6.x] fix: reduce memory usage in client-h1 by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3672">nodejs/undici#3672</a></li>
<li>[Backport v6.x] fix: refactor fast timers, fix
UND_ERR_CONNECT_TIMEOUT on event loop blocking by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3673">nodejs/undici#3673</a></li>
<li>[Backport v6.x] fix: run asserts first if possible by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3674">nodejs/undici#3674</a></li>
<li>[Backport v6.x] fix: use fasttimers for all connection timeouts by
<a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3675">nodejs/undici#3675</a></li>
<li>[Backport v6.x] ci: less flaky test/request-timeout.js test by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3678">nodejs/undici#3678</a></li>
<li>[Backport v6.x] test: less flaky timers acceptance test, rework fast
timer tests to pass them faster by <a
href="https://github.com/github-actions"><code>@​github-actions</code></a>
in <a
href="https://redirect.github.com/nodejs/undici/pull/3679">nodejs/undici#3679</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/nodejs/undici/commit/e260e7bb173abe3399dabd61338ca4a71fcf8825"><code>e260e7b</code></a>
Bumped v6.21.1</li>
<li><a
href="https://github.com/nodejs/undici/commit/c3acc6050b781b827d80c86cbbab34f14458d385"><code>c3acc60</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/nodejs/undici/commit/2414bc9f7d651f830902af00238e1b11d9a389dc"><code>2414bc9</code></a>
Update return type of RetryCallback (<a
href="https://redirect.github.com/nodejs/undici/issues/3851">#3851</a>)
(<a
href="https://redirect.github.com/nodejs/undici/issues/3876">#3876</a>)</li>
<li><a
href="https://github.com/nodejs/undici/commit/be8cd0afa0cf8207d8849026f2ee6fdc6dc9dcec"><code>be8cd0a</code></a>
[Backport v6.x] fix: Fixed the issue that there is no running request
when ht...</li>
<li><a
href="https://github.com/nodejs/undici/commit/ee6176cd2e09853c868bf5bc1a34bf0500963e4d"><code>ee6176c</code></a>
fix: sending formdata bodies with http2 (<a
href="https://redirect.github.com/nodejs/undici/issues/3863">#3863</a>)
[backport] (<a
href="https://redirect.github.com/nodejs/undici/issues/3866">#3866</a>)</li>
<li><a
href="https://github.com/nodejs/undici/commit/a0220f14bfd2a404173eacc94aa1722829075283"><code>a0220f1</code></a>
fix(<a
href="https://redirect.github.com/nodejs/undici/issues/3817">#3817</a>):
send servername for SNI on TLS (<a
href="https://redirect.github.com/nodejs/undici/issues/3821">#3821</a>)
[backport] (<a
href="https://redirect.github.com/nodejs/undici/issues/3864">#3864</a>)</li>
<li><a
href="https://github.com/nodejs/undici/commit/353ab63188af904a17030d96018d6193247d7d18"><code>353ab63</code></a>
fix(<a
href="https://redirect.github.com/nodejs/undici/issues/3736">#3736</a>):
back-port 183f8e9 to v6.x (<a
href="https://redirect.github.com/nodejs/undici/issues/3855">#3855</a>)</li>
<li><a
href="https://github.com/nodejs/undici/commit/61ec3531a64ffeec953a990c11735ff09455de4e"><code>61ec353</code></a>
Bumped v6.21.0</li>
<li><a
href="https://github.com/nodejs/undici/commit/11e31a4fdc92b09dc47f2cc5c30f5e975e6b6499"><code>11e31a4</code></a>
fix: range end is zero-indexed (<a
href="https://redirect.github.com/nodejs/undici/issues/3826">#3826</a>)
(<a
href="https://redirect.github.com/nodejs/undici/issues/3827">#3827</a>)</li>
<li><a
href="https://github.com/nodejs/undici/commit/98d1b1b2bdbe6137d4b4156b5fbe33af44bdb293"><code>98d1b1b</code></a>
fix: handle undefined deref() of WeakRef(socket) (<a
href="https://redirect.github.com/nodejs/undici/issues/3751">#3751</a>)
(<a
href="https://redirect.github.com/nodejs/undici/issues/3822">#3822</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/nodejs/undici/compare/v6.19.8...v6.21.1">compare
view</a></li>
</ul>
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