Bump typedoc-plugin-markdown from 4.2.7 to 4.2.9 (#3018)

Bumps [typedoc-plugin-markdown](https://github.com/typedoc2md/typedoc-plugin-markdown/tree/HEAD/packages/typedoc-plugin-markdown) from 4.2.7 to 4.2.9.
- [Release notes](https://github.com/typedoc2md/typedoc-plugin-markdown/releases)
- [Changelog](https://github.com/typedoc2md/typedoc-plugin-markdown/blob/main/packages/typedoc-plugin-markdown/CHANGELOG.md)
- [Commits](https://github.com/typedoc2md/typedoc-plugin-markdown/commits/typedoc-plugin-markdown@4.2.9/packages/typedoc-plugin-markdown)

---
updated-dependencies:
- dependency-name: typedoc-plugin-markdown
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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docs-src/package.json

@@ -20,7 +20,7 @@
     "starlight-typedoc": "^0.13.1",
     "tailwindcss": "^3.4.3",
     "typedoc": "^0.26.7",
-    "typedoc-plugin-markdown": "4.2.7",
+    "typedoc-plugin-markdown": "4.2.9",
     "typescript": "^5.5.3"
   },
   "devDependencies": {