Git commits in Moodle 3.8.7 by Sam Hemelryk

commit 1db6212c68f6d4073e7d6c7b453f5997b3d2514e
Author: Sam Hemelryk <sam.hemelryk@totaralearning.com>
Date:   Wed, 19 Aug 2020 13:10:30 +0800
Tag:    v3.8.7

MDL-68896 mod_scorm: improved sendBeacon use when unloading