Merge pull request serverless#5587 from joshuanapoli/master

Upgrade to aws-sdk v2.373.0

Author: dschep

package-lock.json

@@ -94,7 +94,7 @@
     "@serverless/platform-sdk": "^0.3.0",
     "archiver": "^1.1.0",
     "async": "^1.5.2",
-    "aws-sdk": "^2.228.0",
+    "aws-sdk": "^2.373.0",
     "bluebird": "^3.5.0",
     "chalk": "^2.0.0",
     "ci-info": "^1.1.1",