fix(package): update selenium-webdriver to version 3.3.0 (#298)

https://greenkeeper.io/

package.json

@@ -114,7 +114,7 @@
     "ps-tree": "^1.1.0",
     "retry-promise": "1.0.0",
     "socket.io": "1.7.3",
-    "selenium-webdriver": "3.1.0",
+    "selenium-webdriver": "3.3.0",
     "ws": "2.2.0"
   },
   "devDependencies": {