Git commits in Moodle 3.9.12 by Ilya Tregubov

commit 55a40f54c2b4d3b57368b41e84278e8f5f039b70
Author: Ilya Tregubov <ilya@moodle.com>
Date:   Tue, 07 Dec 2021 20:59:46 +0800
Tag:    v3.9.12

weekly release 3.9.11+