chore(package): update ts-node to version 6.0.0

Author: greenkeeper[bot]

package.json

@@ -55,7 +55,7 @@
     "serverless-stack-output": "^0.2.0",
     "source-map-support": "^0.5.0",
     "ts-mockito": "^2.2.5",
-    "ts-node": "^5.0.0",
+    "ts-node": "^6.0.0",
     "tslint": "^5.8.0"
   }
 }