Bump katex from 0.16.10 to 0.16.21 in /services/app/apps/codebattle

Bumps [katex](https://github.com/KaTeX/KaTeX) from 0.16.10 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@v0.16.10...v0.16.21)

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

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

Author: dependabot[bot]

services/app/apps/codebattle/package.json

@@ -68,7 +68,7 @@
     "humps": "^2.0.1",
     "i18next": "^19.8.4",
     "jquery": "^3.5.1",
-    "katex": "^0.16.10",
+    "katex": "^0.16.21",
     "lodash": "^4.17.21",
     "mini-css-extract-plugin": "^2.7.3",
     "moment": "^2.29.4",

services/app/apps/codebattle/yarn.lock

@@ -8675,10 +8675,10 @@ junk@^3.1.0:
   resolved "https://registry.npmjs.org/junk/-/junk-3.1.0.tgz"
   integrity sha512-pBxcB3LFc8QVgdggvZWyeys+hnrNWg4OcZIU/1X59k5jQdLBlCsYGRQaz234SqoRLTCgMH00fY0xRJH+F9METQ==
 
-katex@^0.16.0, katex@^0.16.10:
-  version "0.16.10"
-  resolved "https://registry.yarnpkg.com/katex/-/katex-0.16.10.tgz#6f81b71ac37ff4ec7556861160f53bc5f058b185"
-  integrity sha512-ZiqaC04tp2O5utMsl2TEZTXxa6WSC4yo0fv5ML++D3QZv/vx2Mct0mTlRx3O+uUkjfuAgOkzsCmq5MiUEsDDdA==
+katex@^0.16.0, katex@^0.16.21:
+  version "0.16.21"
+  resolved "https://registry.yarnpkg.com/katex/-/katex-0.16.21.tgz#8f63c659e931b210139691f2cc7bb35166b792a3"
+  integrity sha512-XvqR7FgOHtWupfMiigNzmh+MgUVmDGU2kXZm899ZkPfcuoPuFxyHmXsgATDpFZDAXCI8tvinaVcDo8PIIJSo4A==
   dependencies:
     commander "^8.3.0"