chore(deps): bump next from 15.4.7 to 15.4.8 in /website

Bumps [next](https://github.com/vercel/next.js) from 15.4.7 to 15.4.8.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.4.7...v15.4.8)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.4.8
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

website/package-lock.json

@@ -32,7 +32,7 @@
     "eslint-config-next": "^15.4.5",
     "final-form": "^4.20.10",
     "lucide-react": "^0.536.0",
-    "next": "^15.4.7",
+    "next": "^15.4.8",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-final-form": "^6.5.9",