chore(deps): bump react-i18next from 15.7.4 to 16.2.4 in /frontend

Bumps [react-i18next](https://github.com/i18next/react-i18next) from 15.7.4 to 16.2.4.
- [Changelog](https://github.com/i18next/react-i18next/blob/master/CHANGELOG.md)
- [Commits](https://github.com/i18next/react-i18next/compare/v15.7.4...v16.2.4)

---
updated-dependencies:
- dependency-name: react-i18next
  dependency-version: 16.2.4
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

frontend/package.json

@@ -33,7 +33,7 @@
     "react-dom": "^19.1.1",
     "react-dropzone": "^14.3.8",
     "react-google-drive-picker": "^1.2.2",
-    "react-i18next": "^15.4.0",
+    "react-i18next": "^16.2.4",
     "react-markdown": "^9.0.1",
     "react-redux": "^9.2.0",
     "react-router-dom": "^7.6.1",