Git commits in Moodle 3.5.17 by Sara Arjona

commit d640a60f961eed8c1fe6abc0b12b8298d41712ed
Author: Sara Arjona <sara@moodle.com>
Date:   Fri, 05 Mar 2021 23:01:44 +0800
Tag:    v3.5.17

weekly release 3.5.16+