chore(package): update mocha to version 5.0.0 (#56)

Author: greenkeeper[bot]

package.json

@@ -52,7 +52,7 @@
   "devDependencies": {
     "@feathersjs/feathers": "^3.0.0",
     "istanbul": "^1.1.0-alpha.1",
-    "mocha": "^4.0.0",
+    "mocha": "^5.0.0",
     "semistandard": "^12.0.0"
   }
 }