Git commits in Moodle x.x.x by Kateryna Degtyariova

commit 094a136394cc67a914dd04ac79fc6c52de32acbf
Author: Kateryna Degtyariova <katerynadegtyariova@catalyst-au.net>
Date:   Tue, 17 Aug 2021 10:16:26 +0800
Tag:    v3.11.4

MDL-72342 groups: Use get_columns() to handle BOM in CSV

commit 33abdf813bef6ff223bef062e5531638f3a8ee29
Author: Kateryna Degtyariova <katerynadegtyariova@catalyst-au.net>
Date:   Tue, 17 Aug 2021 10:14:41 +0800
Tag:    v3.10.8

MDL-72342 groups: Use get_columns() to handle BOM in CSV