change selenium version

Author: JiaLiPassion

sauce-selenium3.conf.js

@@ -23,7 +23,7 @@ module.exports = function (config) {
       recordVideo: false,
       recordScreenshots: false,
       options:  {
-          'selenium-version': '3.3.0',
+          'selenium-version': '3.4.0',
           'command-timeout': 600,
           'idle-timeout': 600,
           'max-duration': 5400