chore(package): update snazzy to version 6.0.0 (#15)

Author: greenkeeperio-bot

package.json

@@ -19,7 +19,7 @@
     "coveralls": "^2.11.12",
     "nyc": "^10.0.0",
     "rewire": "^2.5.2",
-    "snazzy": "^5.0.0",
+    "snazzy": "^6.0.0",
     "standard": "^8.0.0"
   },
   "engines": {