chore(package): update nyc to version 11.4.1

package.json

@@ -40,7 +40,7 @@
     "eslint-plugin-promise": "~3.6.0",
     "eslint-plugin-standard": "~3.0.0",
     "mocha": "~4.0.0",
-    "nyc": "~11.3.0",
+    "nyc": "~11.4.1",
     "utf-8-validate": "~4.0.0"
   }
 }