Offering to co-maintain Entity Reference Drag & Drop

It seems that there's a new maintainer who created a 2.1.0 release a month weeks ago.

If you're still interested in helping out the module you might contact the maintainer(s) directly?

Yup, there was a new release but the D11 compatibility issue has been waiting since March: 📌 Automated Drupal 11 compatibility fixes for entityreference_dragdrop Needs review .