chore(package): update mocha to version 5.0.0

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "eslint-plugin-node": "^5.2.1",
     "glob": "^7.0.0",
     "loader.js": "^4.2.3",
-    "mocha": "^4.0.0",
+    "mocha": "^5.0.0",
     "request": "^2.55.0",
     "rsvp": "^4.0.1"
   },