Bump @remix-run/router and react-router-dom in /examples/react-app

Bumps [@remix-run/router](https://github.com/remix-run/react-router/tree/HEAD/packages/router) to 1.23.2 and updates ancestor dependency [react-router-dom](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom). These dependencies need to be updated together.


Updates `@remix-run/router` from 1.20.0 to 1.23.2
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/@remix-run/router@1.23.2/packages/router/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/@remix-run/router@1.23.2/packages/router)

Updates `react-router-dom` from 6.27.0 to 6.30.3
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/react-router-dom@6.30.3/packages/react-router-dom)

---
updated-dependencies:
- dependency-name: "@remix-run/router"
  dependency-version: 1.23.2
  dependency-type: indirect
- dependency-name: react-router-dom
  dependency-version: 6.30.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

examples/react-app/package-lock.json

@@ -22,7 +22,7 @@
     "ethers": "^6.13.5",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
-    "react-router-dom": "^6.27.0",
+    "react-router-dom": "^6.30.3",
     "source-map-loader": "^5.0.0",
     "typescript": "^5.8.2"
   },