build(deps): bump react-dom from 18.3.1 to 19.2.0 in /frontend

Bumps [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) from 18.3.1 to 19.2.0.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.2.0/packages/react-dom)

---
updated-dependencies:
- dependency-name: react-dom
  dependency-version: 19.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -16,7 +16,7 @@
     "axios": "^1.4.0",
     "bootstrap": "5.3.8",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0",
+    "react-dom": "^19.2.0",
     "react-markdown": "^9.0.1",
     "react-router-dom": "^6.14.1",
     "remark-gfm": "^4.0.0"