chore: update Next.js to version 16.1.1 in package.json and package-lock.json

Author: waleedcodes

package-lock.json

@@ -67,7 +67,7 @@
     "lucide-react": "^0.468.0",
     "mini-svg-data-uri": "^1.4.4",
     "motion": "^12.23.22",
-    "next": "15.5.9",
+    "next": "^16.1.1",
     "next-themes": "^0.4.6",
     "react": "19.0.0",
     "react-dom": "19.0.0",