chore(package): update nyc to version 14.1.0

Closes #64

Author: greenkeeper[bot]

package.json

@@ -81,7 +81,7 @@
     "feathers-rest": "^1.8.1",
     "istanbul": "^0.4.5",
     "mocha": "5.0.5",
-    "nyc": "^12.0.1",
+    "nyc": "^14.1.0",
     "request-promise": "^4.2.2",
     "webpack": "^4.2.0",
     "webpack-cli": "^3.0.8",