add support for serverless framework v4 (#142)

Author: eahefnawy

package.json

@@ -54,7 +54,7 @@
     "typescript": "^4.5.5"
   },
   "peerDependencies": {
-    "serverless": "^2 || ^3"
+    "serverless": "^2 || ^3 || ^4"
   },
   "engines": {
     "node": ">=12"