- update to 20231221:
* A smallish release, this month.
* Plenty of bug-fixes, but the majority of the changes happened
behind the scenes.
* #4126 - add alias 'tags:'
* #4115 - create HelpBar after colours
* #4116 - Fix Batch Sending of Emails
* #4119 - Fix Header Cache Key Handling
* #4121 - mutt_oauth2.py: error out if ENCRYPTION_PIPE was not
supplied
* #4124 - config: fix flag overlaps
* #4125 - compose: restore view-text/pager/mailcap
* color: fix attr_color_copy()
* fix :color dump
* fix leak in completion
* force mail check on current mailbox after ``
* Allow sending an empty mail
* mutt_oauth2.py: Use readline to overcome macOS input()
restrictions

- fix build for older dists
* Kill global and Propagate display attach status through State-
- stop owning directories provided by filesystem (bsc#1184787)