Bump next from 15.4.7 to 15.4.8

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]

package-lock.json

@@ -15,7 +15,7 @@
     "fast-glob": "^3.3.3",
     "immer": "^10.1.1",
     "lodash": "^4.17.21",
-    "next": "^15.4.7",
+    "next": "^15.4.8",
     "openai": "^4.103.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",