fix(deps): update dependency next to v15.4.7 [security] (#930)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
     "image-size": "^1.1.0",
     "lucide-react": "0.509.0",
     "mysql2": "^3.6.1",
-    "next": "15.3.3",
+    "next": "15.4.7",
     "next-auth": "^4.23.1",
     "next-mdx-remote": "^5.0.0",
     "next-themes": "^0.4.0",