Consider removing drupal/action as hard dependency

Problem/Motivation

In release 3.0.0-beta21 dependency was added on drupal/action module (the reason is that in Drupal 11 the module was removed from core).

However, I wonder if a hard dependency is required. I can use the module without the Action module enabled on D11.

Note: When I update moderated_content_bulk_publish to the latest release, the Action module doesn't get enabled, only the module files are pulled by composer.

Steps to reproduce

1. Update moderated_content_bulk_publish to 3.0.0-beta21
2. The composer requirement pulls in the module, but it's not getting enabled, you need to do it manually if you need it.

Proposed resolution

Consider removing the requirement for drupal/action.

Maybe it would be enough to add a section about drupal/action in the README for projects that want to use its functionality?

It's possible that I'm not aware of some functionality that does require the action module. Let me know if that's the case.

Remaining tasks

User interface changes

API changes

Data model changes