chore(package): update mocha to version 5.0.0

Author: greenkeeper[bot]

package.json

@@ -57,7 +57,7 @@
     "chai": "^4.0.2",
     "chai-as-promised": "^7.0.0",
     "husky": "^0.14.3",
-    "mocha": "^4.0.1",
+    "mocha": "^5.0.0",
     "nyc": "^11.0.2",
     "prettier": "1.9.2",
     "semantic-release": "^12.2.2",