Update ws to the latest version 🚀 (#5547)

* fix(package): update ws to version 7.0.0

* chore(package): update lockfile package-lock.json

Author: greenkeeper[bot]

package-lock.json

@@ -42,7 +42,7 @@
     "uuid": "3.3.2",
     "winston": "3.2.1",
     "winston-daily-rotate-file": "3.9.0",
-    "ws": "6.2.1"
+    "ws": "7.0.0"
   },
   "devDependencies": {
     "@babel/cli": "7.4.4",