fix(deps): update dependency katex to v0.16.21 [security] (#1403)

Author: r0b1n

packages/pluggableWidgets/rich-text-web/package.json

@@ -51,7 +51,7 @@
         "classnames": "^2.2.6",
         "dompurify": "^3.2.4",
         "js-beautify": "^1.15.4",
-        "katex": "^0.16.11",
+        "katex": "^0.16.21",
         "linkifyjs": "^4.1.3",
         "lodash.merge": "^4.6.2",
         "parchment": "^3.0.0",