Bump react-dnd from 11.1.3 to 16.0.1 in /frontend

Bumps [react-dnd](https://github.com/react-dnd/react-dnd) from 11.1.3 to 16.0.1.
- [Release notes](https://github.com/react-dnd/react-dnd/releases)
- [Changelog](https://github.com/react-dnd/react-dnd/blob/main/CHANGELOG.md)
- [Commits](https://github.com/react-dnd/react-dnd/commits)

---
updated-dependencies:
- dependency-name: react-dnd
  dependency-version: 16.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package.json

@@ -46,7 +46,7 @@
     "next-cookies": "^2.0.3",
     "pdfkit": "^0.15.1",
     "react": "19.0.0",
-    "react-dnd": "^11.1.3",
+    "react-dnd": "^16.0.1",
     "react-dnd-html5-backend": "^11.1.3",
     "react-dom": "19.0.0",
     "react-hook-form": "^7.53.0",