chore(deps): bump next from 16.1.7 to 16.2.1

Bumps [next](https://github.com/vercel/next.js) from 16.1.7 to 16.2.1.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v16.1.7...v16.2.1)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

apps/site/package.json

@@ -36,7 +36,7 @@
     "fumadocs-mdx": "14.2.10",
     "fumadocs-ui": "16.6.17",
     "lucide-react": "^0.577.0",
-    "next": "16.1.7",
+    "next": "16.2.1",
     "react": "19.2.4",
     "react-dom": "19.2.4",
     "tailwind-merge": "^3.5.0"