chore(package): update nyc to version 14.1.1

Closes #35

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "coveralls": "^3.0.1",
-    "nyc": "12.0.2",
+    "nyc": "14.1.1",
     "standard": "^11.0.1",
     "tape": "^4.9.0"
   },