Git commits in Moodle 3.9.x by Jenkins Automation

commit 9763c99f871cf47ed0f4eb38bfdf847ffc47fd73
Author: Jenkins Automation <noreply@netspot.com.au>
Date:   Fri, 18 Sep 2020 09:04:10 +0800
Tag:    v3.9.3

MDL-69726 calendar: fix raw event fetcher under postgres