chore(package): update nyc to version 10.0.0

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "eslint-plugin-ava": "^4.0.0",
     "fetch-mock": "^5.5.0",
     "husky": "^0.11.9",
-    "nyc": "^9.0.1",
+    "nyc": "^10.0.0",
     "rimraf": "^2.5.4",
     "sinon": "^1.17.6",
     "validate-commit-msg": "^2.8.2"