chore(deps): bump react-router from 7.5.0 to 7.5.2 in /frontend (#119)

Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 7.5.0 to 7.5.2.
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/packages/react-router/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/react-router@7.5.2/packages/react-router)

---
updated-dependencies:
- dependency-name: react-router
  dependency-version: 7.5.2
  dependency-type: direct:production
...

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frontend/package.json

@@ -25,7 +25,7 @@
     "react-dom": "^19.1.0",
     "react-i18next": "^15.4.1",
     "react-markdown": "^10.1.0",
-    "react-router": "^7.1.3",
+    "react-router": "^7.5.2",
     "zod": "^3.24.1"
   },
   "devDependencies": {