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

Author: renovate[bot]

package.json

@@ -28,7 +28,7 @@
     "geist": "^1.4.2",
     "lucide-react": "^0.511.0",
     "motion": "^12.15.0",
-    "next": "15.3.3",
+    "next": "15.4.7",
     "next-themes": "^0.4.6",
     "react": "19.1.0",
     "react-dom": "19.1.0",