chore(deps): update dependency serverless to v4

Author: renovate[bot]

serverless/package.json

@@ -12,7 +12,7 @@
     "graphql": "16.10.0"
   },
   "devDependencies": {
-    "serverless": "3.40.0",
+    "serverless": "4.9.0",
     "serverless-offline": "8.8.1"
   }
 }