Import Galera 26.4.24 minor maintenance release

Similar to MRs labeled new-upstream-version, this Merge Request contains the import of a new upstream version.

Do not review merge commits or upstream commits, but focus on the ones that are made only on the proposed debian/latest branch update in this MR:

git log --first-parent --reverse --format='format:* %C(yellow)%h%C(reset) %s' debian/latest...

• 0b3464dc Update upstream source from tag 'upstream/26.4.24'
• cac527ce Update changelog and refresh patches after 26.4.24 import

Changelog:

galera-4 (26.4.24-1) UNRELEASED; urgency=medium

  * New upstream release 26.4.24. Includes multiple bug fixes, see
    https://github.com/codership/documentation/blob/master/release-notes/release-notes-galera-26.4.24.txt
  * New upstream version includes the option to disable application level
    protocol check to allow migration from MySQL to MariaDB and other MariaDB
    compatibility improvements.
  * Salsa CI: Enable most of Salsa CI features and unify with similar job logic
    in MariaDB Server and Entr packages

 -- Otto Kekäläinen <otto@debian.org>  Thu, 09 Oct 2025 10:38:43 -0700

I am not aware of any additional Debian tracked bugs at https://bugs.debian.org/cgi-bin/pkgreport.cgi?repeatmerged=no&src=galera-4 that are fixed by this upstream version.

Note also test builds on multiple architectures at https://launchpad.net/~mysql-ubuntu/+archive/ubuntu/mariadb/+builds?build_text=&build_state=all