Bump marked and typedoc in /src

Bumps [marked](https://github.com/markedjs/marked) to 4.2.12 and updates ancestor dependency [typedoc](https://github.com/TypeStrong/TypeDoc). These dependencies need to be updated together.


Updates `marked` from 3.0.8 to 4.2.12
- [Release notes](https://github.com/markedjs/marked/releases)
- [Changelog](https://github.com/markedjs/marked/blob/master/.releaserc.json)
- [Commits](markedjs/marked@v3.0.8...v4.2.12)

Updates `typedoc` from 0.21.9 to 0.21.10
- [Release notes](https://github.com/TypeStrong/TypeDoc/releases)
- [Changelog](https://github.com/TypeStrong/typedoc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TypeStrong/TypeDoc/commits)

---
updated-dependencies:
- dependency-name: marked
  dependency-type: indirect
- dependency-name: typedoc
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/package-lock.json

@@ -42,7 +42,7 @@
         "rxjs": "7.5.5"
     },
     "devDependencies": {
-        "typedoc": "0.21.9",
+        "typedoc": "0.21.10",
         "@microsoft/tsdoc": "0.13.2",
         "@microsoft/tsdoc-config": "0.15.2",
         "sass": "1.57.1",