Bump katex from 0.16.0 to 0.16.2 (#802)

Bumps [katex](https://github.com/KaTeX/KaTeX) from 0.16.0 to 0.16.2.
- [Release notes](https://github.com/KaTeX/KaTeX/releases)
- [Changelog](https://github.com/KaTeX/KaTeX/blob/main/CHANGELOG.md)
- [Commits](https://github.com/KaTeX/KaTeX/compare/v0.16.0...v0.16.2)

---
updated-dependencies:
- dependency-name: katex
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -29,7 +29,7 @@
     "flux": "^4.0.3",
     "formik": "^2.2.9",
     "html-react-parser": "^3.0.4",
-    "katex": "^0.16.0",
+    "katex": "^0.16.2",
     "linkify-html": "^4.0.0-beta.5",
     "linkifyjs": "^4.0.0-beta.5",
     "matrix-js-sdk": "^19.4.0",