Git commits in Moodle 3.9.9 by abgreeve

commit 54a2d7df227a53897e8926221348dc8cc2c6d271
Author: abgreeve <adrian@moodle.com>
Date:   Fri, 16 Jul 2021 10:16:44 +0800
Tag:    v3.9.9

weekly release 3.9.8+