chore(deps): bump next from 16.1.6 to 16.2.6 in /app

Bumps [next](https://github.com/vercel/next.js) from 16.1.6 to 16.2.6.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v16.1.6...v16.2.6)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.2.6
  dependency-type: direct:production
...

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

Author: dependabot[bot]

app/package.json

@@ -21,7 +21,7 @@
     "clsx": "^2.1.0",
     "es-toolkit": "^1.43.0",
     "lucide-react": "^0.562.0",
-    "next": "16.1.6",
+    "next": "16.2.6",
     "prism-react-renderer": "^2.4.1",
     "react": "19.2.6",
     "react-dom": "19.2.6",