Bug fixes

• Issue #3535511: Fixed position of the Save as button for the default Workflow in Gin ~5.0 and Drupal ~11.2.0

• Issue 3535525: Remove \r so that exported agents have literal block scalar

1. Removed Drupal 9 support from both info.yml and composer.json as it's no longer supported
2. Updated VERSION placeholder in libraries.yml to use literal version string '1.0.2'

This release remove dependency to ckeditor4 and replace it with core ckeditor5