Git commits in Moodle 3.10.4 by Septatrix

commit 8f0daf43b79aa328bafee5533aa06f35a9244ef2
Author: Septatrix <24257556+Septatrix@users.noreply.github.com>
Date:   Sat, 17 Apr 2021 18:49:15 +0800
Tag:    v3.10.4

MDL-70110 assign: add group submission attemptnumber test