Update test packages

test/test.js

@@ -10,7 +10,7 @@
 
 require('chromedriver');
 
-var execSync = require('child_process').execSync,
+const execSync = require('child_process').execSync,
     expect = require('expect.js'),
     path = require('path'),
     { Builder, By, Key, until } = require('selenium-webdriver'),
@@ -34,7 +34,7 @@ describe('Application life cycle test', function () {
     const EMAIL = process.env.EMAIL;
     const PASSWORD = process.env.PASSWORD;
 
-    var browser, app;
+    let browser, app;
 
     before(function () {
         const options = new Options().windowSize({ width: 1280, height: 1024 });