chore(package): update stylelint-config-standard to version 12.0.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -65,7 +65,7 @@
     "postcss-nested": "^1.0.0",
     "postcss-sorting": "^1.6.1",
     "stylelint": "^7.0.3",
-    "stylelint-config-standard": "^11.0.0",
+    "stylelint-config-standard": "^12.0.0",
     "updtr": "^0.2.1"
   },
   "babel": {