chore(package): update saucelabs to version 4.4.0

Closes #19

Author: greenkeeper[bot]

package.json

@@ -78,7 +78,7 @@
     "rollup-plugin-replace": "^2.1.1",
     "rollup-plugin-sass": "^1.1.0",
     "sass": "^1.7.2",
-    "saucelabs": "^2.1.3",
+    "saucelabs": "^4.4.0",
     "selenium-webdriver": "^4.0.0-alpha.1",
     "shx": "^0.3.2",
     "stylelint-config-standard": "^18.2.0",