build(deps): bump react-i18next in /frontend in the i18next group

Bumps the i18next group in /frontend with 1 update: [react-i18next](https://github.com/i18next/react-i18next).


Updates `react-i18next` from 15.5.2 to 15.5.3
- [Changelog](https://github.com/i18next/react-i18next/blob/master/CHANGELOG.md)
- [Commits](i18next/react-i18next@v15.5.2...v15.5.3)

---
updated-dependencies:
- dependency-name: react-i18next
  dependency-version: 15.5.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: i18next
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

frontend/package-lock.json

@@ -33,7 +33,7 @@
     "i18next": "^25.2.1",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
-    "react-i18next": "^15.5.2",
+    "react-i18next": "^15.5.3",
     "swagger-ui-dist": "^5.24.1",
     "valibot": "^1.1.0",
     "vaul": "^1.1.2"