chore(deps): bump react from 18.3.1 to 19.1.0 in /frontend (#104)

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) from 18.3.1 to 19.1.0.
- [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/v19.1.0/packages/react)

---
updated-dependencies:
- dependency-name: react
  dependency-version: 19.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/package.json

@@ -21,7 +21,7 @@
     "i18next-chained-backend": "^4.6.2",
     "i18next-http-backend": "^3.0.2",
     "i18next-resources-to-backend": "^1.2.1",
-    "react": "^18.3.1",
+    "react": "^19.1.0",
     "react-dom": "^18.3.1",
     "react-i18next": "^15.4.1",
     "react-router": "^7.1.3",