chore(package): update nyc to version 11.7.2

Closes #37

Author: greenkeeper[bot]

package.json

@@ -63,7 +63,7 @@
     "ava": "0.25.0",
     "coveralls": "2.13.2",
     "execa": "0.9.0",
-    "nyc": "11.4.1",
+    "nyc": "11.7.2",
     "standard-version": "4.3.0",
     "text-loader": "0.0.1",
     "webpack": "3.11.0",