Merge pull request #433 from mozilla/dependabot/npm_and_yarn/glean/typedoc-0.21.0

Bump typedoc from 0.20.37 to 0.21.0 in /glean

Author: Beatriz Rizental

glean/package-lock.json

@@ -102,7 +102,7 @@
     "sinon": "^11.0.0",
     "ts-loader": "^9.0.1",
     "ts-node": "^10.0.0",
-    "typedoc": "^0.20.37",
+    "typedoc": "^0.21.0",
     "typescript": "^4.3.4",
     "web-ext-types": "^3.2.1",
     "webpack": "^5.39.1",