chore(deps): bump katex from 0.16.11 to 0.16.21 (#637)

Bumps [katex](https://github.com/KaTeX/KaTeX) from 0.16.11 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@v0.16.11...v0.16.21)

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

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

yarn.lock

@@ -16319,13 +16319,13 @@ __metadata:
   linkType: hard
 
 "katex@npm:^0.16.9":
-  version: 0.16.11
-  resolution: "katex@npm:0.16.11"
+  version: 0.16.21
+  resolution: "katex@npm:0.16.21"
   dependencies:
     commander: "npm:^8.3.0"
   bin:
     katex: cli.js
-  checksum: 10/adfb95a70168f732c26f44a443d27df393ca641a3533aa9321f37b1b69134cf4b15142d533c187ec9a0b02c0bbfebab5ab26f15bd0cc08a57114e1f767f0d7ae
+  checksum: 10/db1094c528972ffb881c64969e87cbca465d21f918f4dad8bfe583f68e1bd601438eda3d79e8d74bc7ccc14e7b76616a9053bb21945749a30a73bc68f20e721b
   languageName: node
   linkType: hard