chore(deps-dev): update serverless requirement from ^4.4.18 to ^4.9.1 in /examples/deploy-aws-lambda (#2476)

Author: dependabot[bot]

examples/deploy-aws-lambda/package.json

@@ -12,7 +12,7 @@
     "@slack/bolt": "^4.2.1"
   },
   "devDependencies": {
-    "serverless": "^4.4.18",
+    "serverless": "^4.9.1",
     "serverless-offline": "^14.4.0"
   }
 }