fix: Avoid unnecessary loading of `actions.js` asset into the toolbar

[fsbraun]

Description

As of django CMS 4.1.1, the actions.js asset needs not be loaded by the toolbar. This slightly improves the decoupling of versioning and django CMS core on the JS code base.

Related resources

• 402

• Only to be merged after release of django CMS 4.1.1

Checklist

• [ ] I have opened this pull request against master
• [ ] I have added or modified the tests when changing logic
• [ ] I have followed the conventional commits guidelines to add meaningful information into the changelog
• [ ] I have read the contribution guidelines and I have joined #workgroup-pr-review on Slack to find a “pr review buddy” who is going to review my pull request.