chore(deps): bump react-router from 7.14.1 to 8.3.0 in /src/frontend/acc

Bumps [react-router](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router) from 7.14.1 to 8.3.0.
- [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@8.3.0/packages/react-router)

---
updated-dependencies:
- dependency-name: react-router
  dependency-version: 8.3.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

src/frontend/acc/package.json

@@ -46,7 +46,7 @@
     "react-compiler-runtime": "19.0.0-beta-e993439-20250328",
     "react-dom": "^18.3.1",
     "react-hook-form": "^7.73.1",
-    "react-router": "^7.14.1",
+    "react-router": "^8.3.0",
     "rehype-highlight": "^7.0.2",
     "serve": "^14.2.6",
     "sonner": "^2.0.7",