ci: remove CHANGELOG.md

Author: lichtner

.github/workflows/update-changelog.yml

@@ -242,7 +242,7 @@ composer test
 
 ## Changelog
 
-Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.
+For changelog check [releases](https://github.com/lichtner/laravel-mock-api/releases).
 
 ## Credits