build(deps): bump react-day-picker from 8.10.1 to 9.11.1 in /frontend

Bumps [react-day-picker](https://github.com/gpbl/react-day-picker) from 8.10.1 to 9.11.1.
- [Release notes](https://github.com/gpbl/react-day-picker/releases)
- [Changelog](https://github.com/gpbl/react-day-picker/blob/main/CHANGELOG.md)
- [Commits](gpbl/react-day-picker@v8.10.1...v9.11.1)

---
updated-dependencies:
- dependency-name: react-day-picker
  dependency-version: 9.11.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package.json

@@ -105,7 +105,7 @@
     "posthog-node": "^5.7.0",
     "re-resizable": "^6.11.2",
     "react": "^19.1.1",
-    "react-day-picker": "^8.10.1",
+    "react-day-picker": "^9.11.1",
     "react-dom": "^19.1.1",
     "react-github-btn": "^1.4.0",
     "react-grid-layout": "^1.5.2",