Update dependency next to v13 [SECURITY]

Author: renovate[bot]

package.json

@@ -16,7 +16,7 @@
   "dependencies": {
     "firebase-admin": "7.2.0",
     "firebase-functions": "2.2.1",
-    "next": "8.1.0",
+    "next": "13.5.0",
     "react": "16.8.6",
     "react-dom": "16.8.6"
   },