chore(package): update protractor & webdriver dependencies

Author: petebacondarwin

package.json

@@ -83,13 +83,13 @@
     "npm-run": "^4.1.0",
     "open-sans-fontface": "^1.4.0",
     "promises-aplus-tests": "~2.1.0",
-    "protractor": "^5.1.2",
+    "protractor": "^5.4.1",
     "q": "~1.0.0",
     "q-io": "^1.10.9",
     "qq": "^0.3.5",
     "rewire": "~2.1.0",
     "sax": "^1.1.1",
-    "selenium-webdriver": "^2.53.1",
+    "selenium-webdriver": "^4.0.0-alpha.1",
     "semver": "^5.4.1",
     "serve-favicon": "^2.3.0",
     "serve-index": "^1.8.0",