Add changelog entry for this branch

Author: Shinomix

CHANGELOG.md

@@ -4,6 +4,7 @@ Note: For changes to the API, see https://shopify.dev/changelog?filter=api
 ## Unreleased
 
 - [#1362](https://github.com/Shopify/shopify-api-ruby/pull/1362) Add support for client credentials grant
+- [#1370](https://github.com/Shopify/shopify-api-ruby/pull/1370) Add support for Shopify internal hosts
 
 ## 14.8.0