Update gscan to version 0.2.4 🚀 (#8368)

* chore(package): update gscan to version 0.2.4

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -46,7 +46,7 @@
     "fs-extra": "2.1.2",
     "ghost-gql": "0.0.6",
     "glob": "5.0.15",
-    "gscan": "0.2.3",
+    "gscan": "0.2.4",
     "html-to-text": "3.2.0",
     "image-size": "0.5.1",
     "intl": "1.2.5",