chore(deps): bump @types/node from 20.19.27 to 25.2.0 in /frontend/app

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.19.27 to 25.2.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-version: 25.2.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/app/package.json

@@ -48,7 +48,7 @@
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.1",
     "@testing-library/user-event": "^14.6.1",
-    "@types/node": "^20.10.0",
+    "@types/node": "^25.2.0",
     "@types/react": "^18.2.45",
     "@types/react-dom": "^18.2.18",
     "@types/react-syntax-highlighter": "^15.5.11",