Bump katex from 0.16.17 to 0.16.18

Bumps [katex](https://github.com/KaTeX/KaTeX) from 0.16.17 to 0.16.18.
- [Release notes](https://github.com/KaTeX/KaTeX/releases)
- [Changelog](https://github.com/KaTeX/KaTeX/blob/main/CHANGELOG.md)
- [Commits](KaTeX/KaTeX@v0.16.17...v0.16.18)

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

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

kolibri/plugins/perseus_viewer/package.json

@@ -36,7 +36,7 @@
     "fractional": "^1.0.0",
     "intersection-observer": "^0.12.0",
     "jquery": "^2.1.1",
-    "katex": "^0.16.17",
+    "katex": "^0.16.18",
     "lodash.debounce": "^4.0.8",
     "prop-types": "^15.6.1",
     "react": "16.14.0",

yarn.lock

@@ -7733,10 +7733,10 @@ jszip@*, jszip@^3.1.5:
     readable-stream "~2.3.6"
     setimmediate "^1.0.5"
 
-katex@^0.16, katex@^0.16.17:
-  version "0.16.17"
-  resolved "https://registry.yarnpkg.com/katex/-/katex-0.16.17.tgz#72c588a0beca0cac10c30f447c2fb14647f773ed"
-  integrity sha512-OyzSrXBllz+Jdc9Auiw0kt21gbZ4hkz8Q5srVAb2U9INcYIfGKbxe+bvNvEz1bQ/NrDeRRho5eLCyk/L03maAw==
+katex@^0.16, katex@^0.16.18:
+  version "0.16.18"
+  resolved "https://registry.yarnpkg.com/katex/-/katex-0.16.18.tgz#20781284288bc52805c519e48ac756163ad4b1f3"
+  integrity sha512-LRuk0rPdXrecAFwQucYjMiIs0JFefk6N1q/04mlw14aVIVgxq1FO0MA9RiIIGVaKOB5GIP5GH4aBBNraZERmaQ==
   dependencies:
     commander "^8.3.0"