chore(package): update ws to version 2.2.2 (#3656)

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -41,7 +41,7 @@
     "tv4": "1.3.0",
     "winston": "2.3.1",
     "winston-daily-rotate-file": "1.4.6",
-    "ws": "2.2.1"
+    "ws": "2.2.2"
   },
   "devDependencies": {
     "babel-cli": "6.24.0",