Bump idna from 3.4 to 3.7 in /examples/mkdocs (#4015)

Bumps [idna](https://github.com/kjd/idna) from 3.4 to 3.7.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/kjd/idna/releases">idna's
releases</a>.</em></p>
<blockquote>
<h2>v3.7</h2>
<h2>What's Changed</h2>
<ul>
<li>Fix issue where specially crafted inputs to encode() could take
exceptionally long amount of time to process. [CVE-2024-3651]</li>
</ul>
<p>Thanks to Guido Vranken for reporting the issue.</p>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/kjd/idna/compare/v3.6...v3.7">https://github.com/kjd/idna/compare/v3.6...v3.7</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/kjd/idna/blob/master/HISTORY.rst">idna's
changelog</a>.</em></p>
<blockquote>
<p>3.7 (2024-04-11)
++++++++++++++++</p>
<ul>
<li>Fix issue where specially crafted inputs to encode() could
take exceptionally long amount of time to process. [CVE-2024-3651]</li>
</ul>
<p>Thanks to Guido Vranken for reporting the issue.</p>
<p>3.6 (2023-11-25)
++++++++++++++++</p>
<ul>
<li>Fix regression to include tests in source distribution.</li>
</ul>
<p>3.5 (2023-11-24)
++++++++++++++++</p>
<ul>
<li>Update to Unicode 15.1.0</li>
<li>String codec name is now &quot;idna2008&quot; as overriding the
system codec
&quot;idna&quot; was not working.</li>
<li>Fix typing error for codec encoding</li>
<li>&quot;setup.cfg&quot; has been added for this release due to some
downstream
lack of adherence to PEP 517. Should be removed in a future release
so please prepare accordingly.</li>
<li>Removed reliance on a symlink for the &quot;idna-data&quot; tool to
comport
with PEP 517 and the Python Packaging User Guide for sdist
archives.</li>
<li>Added security reporting protocol for project</li>
</ul>
<p>Thanks Jon Ribbens, Diogo Teles Sant'Anna, Wu Tingfeng for
contributions
to this release.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/kjd/idna/commit/1d365e17e10d72d0b7876316fc7b9ca0eebdd38d"><code>1d365e1</code></a>
Release v3.7</li>
<li><a
href="https://github.com/kjd/idna/commit/c1b3154939907fab67c5754346afaebe165ce8e6"><code>c1b3154</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/172">#172</a> from
kjd/optimize-contextj</li>
<li><a
href="https://github.com/kjd/idna/commit/0394ec76ff022813e770ba1fd89658790ea35623"><code>0394ec7</code></a>
Merge branch 'master' into optimize-contextj</li>
<li><a
href="https://github.com/kjd/idna/commit/cd58a23173d2b0a40b95ee680baf3e59e8d33966"><code>cd58a23</code></a>
Merge pull request <a
href="https://redirect.github.com/kjd/idna/issues/152">#152</a> from
elliotwutingfeng/dev</li>
<li><a
href="https://github.com/kjd/idna/commit/5beb28b9dd77912c0dd656d8b0fdba3eb80222e7"><code>5beb28b</code></a>
More efficient resolution of joiner contexts</li>
<li><a
href="https://github.com/kjd/idna/commit/1b121483ed04d9576a1291758f537e1318cddc8b"><code>1b12148</code></a>
Update ossf/scorecard-action to v2.3.1</li>
<li><a
href="https://github.com/kjd/idna/commit/d516b874c3388047934938a500c7488d52c4e067"><code>d516b87</code></a>
Update Github actions/checkout to v4</li>
<li><a
href="https://github.com/kjd/idna/commit/c095c75943413c75ebf8ac74179757031b7f80b7"><code>c095c75</code></a>
Merge branch 'master' into dev</li>
<li><a
href="https://github.com/kjd/idna/commit/60a0a4cb61ec6834d74306bd8a1fa46daac94c98"><code>60a0a4c</code></a>
Fix typo in GitHub Actions workflow key</li>
<li><a
href="https://github.com/kjd/idna/commit/5918a0ef8034379c2e409ae93ee11d24295bb201"><code>5918a0e</code></a>
Merge branch 'master' into dev</li>
<li>Additional commits viewable in <a
href="https://github.com/kjd/idna/compare/v3.4...v3.7">compare
view</a></li>
</ul>
</details>
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