Git commits in Moodle 3.7.7 by Jonathon Fowler

commit 1d8729004a8edc9500750d0481f8c4c97995451d
Author: Jonathon Fowler <fowlerj@usq.edu.au>
Date:   Thu, 07 May 2020 11:06:06 +0800
Tag:    v3.7.7

MDL-68631 cron: ensure the cron user is reset between scheduled tasks