chore: publish app v1.6.0

Author: leomp12

assets/application.json

@@ -3,7 +3,7 @@
   "state": "active",
   "title": "Frete personalizado",
   "slug": "customshipping",
-  "version": "1.3.0",
+  "version": "1.6.0",
   "type": "external",
   "authentication": true,
   "auth_callback_uri": "https://customshipping.ecomplus.biz/ecom/auth-callback",