Bump katex from 0.13.16 to 0.13.18

Bumps [katex](https://github.com/KaTeX/KaTeX) from 0.13.16 to 0.13.18.
- [Release notes](https://github.com/KaTeX/KaTeX/releases)
- [Changelog](https://github.com/KaTeX/KaTeX/blob/master/CHANGELOG.md)
- [Commits](https://github.com/KaTeX/KaTeX/compare/v0.13.16...v0.13.18)

---
updated-dependencies:
- dependency-name: katex
  dependency-type: direct:development
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

yarn.lock

@@ -5283,9 +5283,9 @@ karma@^6.0.1:
     yargs "^16.1.1"
 
 katex@^0.13.0:
-  version "0.13.16"
-  resolved "https://registry.yarnpkg.com/katex/-/katex-0.13.16.tgz#551b901a949445fcc19eacacd8369f9d6d8ca49a"
-  integrity sha512-Q+odt4vx4Og/B5CbuMqE1uiTLnS5EWUFic40xsx8drbqYYiuPPHct7PNj84dFiJ5AFxSZhNPkeBULAtxzEndNg==
+  version "0.13.18"
+  resolved "https://registry.yarnpkg.com/katex/-/katex-0.13.18.tgz#ba89e8e4b70cc2325e25e019a62b9fe71e5c2931"
+  integrity sha512-a3dC4NSVSDU3O1WZbTnOiA8rVNJ2lSiomOl0kmckCIGObccIHXof7gAseIY0o1gjEspe+34ZeSEX2D1ChFKIvA==
   dependencies:
     commander "^6.0.0"