[debian-mysql] Bug#1035949: mariadb: upgrade issue: mariadb-server-10.5 fails to stop after all other -10.5 packages were removed

[Otto Kekäläinen]

Forwarded: https://jira.mariadb.org/browse/MDEV-28640

For reference:

* The upgrade scenario this MR fixed:
https://salsa.debian.org/mariadb-team/mariadb-server/-/commit/15cbf6e691827608636e6ff7f0a50432f50d0c4f
* Release notes mention:
https://salsa.debian.org/ddp-team/release-notes/-/merge_requests/187
* Upload to experimental pending in NEW queue:
https://ftp-master.debian.org/new/mariadb_1:10.11.3-2~exp1.html
* Release team consultation:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1037107