Git commits in Moodle 3.8.6 by Adrian Greeve

commit 261d79a5ed3ab94f00cef186a5cb81d9f3642c25
Author: Adrian Greeve <abgreeve@gmail.com>
Date:   Tue, 20 Oct 2020 09:13:58 +0800
Tag:    v3.8.6

MDL-68284 gradebook: Fix use of get_recordset in upgrade code.