chore(package): update nyc to version 11.3.0 (#1230)

Author: greenkeeper[bot]

package.json

@@ -40,7 +40,7 @@
  "eslint-plugin-promise": "~3.6.0",
  "eslint-plugin-standard": "~3.0.0",
  "mocha": "~4.0.0",
- "nyc": "~11.2.0",
+ "nyc": "~11.3.0",
  "utf-8-validate": "~3.0.0"
  }
 }