chore: bump the react group in /site with 1 update (#9164)

Bumps the react group in /site with 1 update: [react-router-dom](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom).

- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/packages/react-router-dom/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/react-router-dom@6.15.0/packages/react-router-dom)

---
updated-dependencies:
- dependency-name: react-router-dom
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: react
...

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site/package.json

@@ -84,7 +84,7 @@
     "react-helmet-async": "1.3.0",
     "react-i18next": "12.2.2",
     "react-markdown": "8.0.3",
-    "react-router-dom": "6.14.1",
+    "react-router-dom": "6.15.0",
     "react-syntax-highlighter": "15.5.0",
     "react-use": "17.4.0",
     "react-virtualized-auto-sizer": "1.0.20",