Update dependency serverless to v4

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "jest": "27.5.1",
     "lint-staged": "11.2.6",
     "reflect-metadata": "0.2.2",
-    "serverless": "2.72.4",
+    "serverless": "4.4.19",
     "serverless-bundle": "5.5.0",
     "serverless-plugin-test-helper": "2.6.4",
     "serverless-offline": "8.8.1",