Make Change author action module D11 compatible

Just adding ^11 to the info file does not make this module compatible with Drupal 11. The module depends on the core `Actions UI` module which is deprecated and removed from Drupal 11 code. So, this means that this module for its Drupal 11 version should be compatible with the contributed Actions UI → module instead. See the relevant issue: https://www.drupal.org/project/change_author_action/issues/3459371 🐛 Replaced Deprecated Actions Module Active

Moreover and generally speaking, commits and merge requests should be atomic and address a single task (feature, bug fix etc) at a time. Your patch and MR contains both a feature (the alleged 11 support), plus some code styling and beautification changes. It is highly confusing to see, understand and review what the actual feature code is. IMO, those should be two separate MRs, each one accurately describing the task.