fix(package): update web3-providers-ws to version 1.2.2

Closes #202

Author: greenkeeper[bot]

package.json

@@ -48,7 +48,7 @@
     "ora": "3.1.0",
     "readline-sync": "1.4.9",
     "web3": "1.0.0-beta.37",
-    "web3-providers-ws": "1.0.0-beta.37",
+    "web3-providers-ws": "1.2.2",
     "websocket": "1.0.28"
   },
   "engines": {