Bump next from 15.5.7 to 15.5.9

Bumps [next](https://github.com/vercel/next.js) from 15.5.7 to 15.5.9.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.5.7...v15.5.9)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.5.9
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -30,7 +30,7 @@
     "class-variance-authority": "^0.7.0",
     "clsx": "^2.1.0",
     "lucide-react": "^0.344.0",
-    "next": "^15.5.7",
+    "next": "^15.5.9",
     "next-themes": "^0.2.1",
     "react": "^18.2.0",
     "react-beautiful-dnd": "^13.1.1",