chore(deps): bump katex from 0.10.2 to 0.16.21

Bumps [katex](https://github.com/KaTeX/KaTeX) from 0.10.2 to 0.16.21.
- [Release notes](https://github.com/KaTeX/KaTeX/releases)
- [Changelog](https://github.com/KaTeX/KaTeX/blob/main/CHANGELOG.md)
- [Commits](KaTeX/KaTeX@v0.10.2...v0.16.21)

---
updated-dependencies:
- dependency-name: katex
  dependency-version: 0.16.21
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -77,7 +77,7 @@
     "d3-hierarchy": "^1.1.9",
     "delay": "^4.4.1",
     "eslint-plugin-import": "^2.31.0",
-    "katex": "^0.10.0",
+    "katex": "^0.16.21",
     "mathjs": "^5.10.3",
     "mf-parser": "^1.5.0",
     "mime-types": "^2.1.35",