Git commits in Moodle 3.5.13 by Jonathon Fowler

commit 4b28673d1f328836c592e624f373507d63e54658
Author: Jonathon Fowler <fowlerj@usq.edu.au>
Date:   Thu, 07 May 2020 11:06:06 +0800
Tag:    v3.5.13

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