chore(package): update protractor to version 5.2.2

Closes #11

Author: greenkeeper[bot]

package.json

@@ -51,7 +51,7 @@
     "karma-jasmine": "~1.1.0",
     "karma-jasmine-html-reporter": "^0.2.2",
     "ng-validators": "^0.2.1",
-    "protractor": "~5.1.2",
+    "protractor": "~5.2.2",
     "semantic-release": "^6.3.6",
     "ts-node": "~3.3.0",
     "tslint": "~5.5.0",