Bump next from 16.0.7 to 16.2.4 in /frontend

Bumps [next](https://github.com/vercel/next.js) from 16.0.7 to 16.2.4.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v16.0.7...v16.2.4)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.2.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

frontend/package.json

@@ -42,7 +42,7 @@
     "graphql-tag": "^2.12.6",
     "marksy": "^8.0.0",
     "moment": "^2.29.1",
-    "next": "16.0.7",
+    "next": "16.2.4",
     "next-cookies": "^2.0.3",
     "pdfkit": "^0.15.1",
     "react": "19.0.0",