updated selenium-webdriver version

Former-commit-id: dcb68a60e5728cc5fa6602c35de85cc041a578e0

cli/package.json

@@ -10,7 +10,7 @@
 		"jsdom": "*",
 		"puppeteer-core": "*",
 		"request-promise-native": "*",
-		"selenium-webdriver": "4.0.0-alpha.1",
+		"selenium-webdriver": "4.0.0-alpha.4",
 		"strong-data-uri": "*",
 		"yargs": "*"
 	}