chore(deps): bump next from 16.1.6 to 16.2.6 in /apps/v4

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](https://github.com/vercel/next.js/compare/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>

apps/v4/package.json

@@ -60,7 +60,7 @@
     "lru-cache": "^11.2.4",
     "lucide-react": "0.474.0",
     "motion": "^12.12.1",
-    "next": "16.1.6",
+    "next": "16.2.6",
     "next-themes": "0.4.6",
     "nuqs": "^2.8.9",
     "postcss": "^8.5.1",