chore(deps): bump next from 16.3.3 to 16.3.6 in /frontend

Bumps [next](https://github.com/vercel/next.js) from 16.3.3 to 16.3.6.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Commits](vercel/next.js@v16.3.3...v16.3.6)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.3.6
  dependency-type: direct:production
...

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

Author: dependabot[bot]

frontend/package.json

@@ -34,7 +34,7 @@
     "@radix-ui/react-select": "^2.3.7",
     "@radix-ui/react-tabs": "^1.1.21",
     "lucide-react": "^1.48.0",
-    "next": "16.3.3",
+    "next": "16.3.6",
     "nextjs-toploader": "3.9.17",
     "openapi-fetch": "^0.17.0",
     "pdfjs-dist": "^6.3.289",