build(deps): bump katex from 0.16.15 to 0.16.22 (#304)

Bumps [katex](https://github.com/KaTeX/KaTeX) from 0.16.15 to 0.16.22.
- [Release notes](https://github.com/KaTeX/KaTeX/releases)
- [Changelog](https://github.com/KaTeX/KaTeX/blob/main/CHANGELOG.md)
- [Commits](KaTeX/KaTeX@v0.16.15...v0.16.22)

---
updated-dependencies:
- dependency-name: katex
  dependency-version: 0.16.22
  dependency-type: indirect
...

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Author: dependabot[bot]