Update typedoc-github-theme requirement

Updates the requirements on [typedoc-github-theme](https://github.com/JulianWowra/typedoc-github-theme) to permit the latest version.

Updates `typedoc-github-theme` to 0.2.1
- [Release notes](https://github.com/JulianWowra/typedoc-github-theme/releases)
- [Commits](JulianWowra/typedoc-github-theme@v0.2.0...v0.2.1)

---
updated-dependencies:
- dependency-name: typedoc-github-theme
  dependency-type: direct:development
  dependency-group: ecosystem
...

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

website/package.json

@@ -55,7 +55,7 @@
     "ts-loader": "^9.5.1",
     "ts-node": "^10.9.1",
     "typedoc": "^0.27.6",
-    "typedoc-github-theme": "^0.2.0",
+    "typedoc-github-theme": "^0.2.1",
     "write-file-webpack-plugin": "^4.5.1"
   }
 }