Update dev-dependencies

Author: wooorm

package.json

@@ -27,7 +27,7 @@
   },
   "devDependencies": {
     "browserify": "^16.2.3",
-    "nyc": "^13.1.0",
+    "nyc": "^14.0.0",
     "prettier": "^1.15.2",
     "remark": "^10.0.0",
     "remark-attr": "^0.8.0",