Git commits in Moodle 3.9.7 by Marina Glancy

commit 4f87b28436c40f62855b129d336086a3df555ab1
Author: Marina Glancy <marina@moodle.com>
Date:   Thu, 06 May 2021 19:44:30 +0800
Tag:    v3.9.7

MDL-71395 core: fix bug in google lib wrapper


commit de6a44d7d031a940cec4fd4aa330740173499506
Author: Marina Glancy <marina@moodle.com>
Date:   Wed, 21 Apr 2021 22:19:21 +0800
Tag:    v3.9.7

MDL-71395 block_tag_youtube: sometimes exception may have empty message


commit d500b5c62d10d9acdf55e76e8a4ebd9f11b2f990
Author: Marina Glancy <marina@moodle.com>
Date:   Wed, 21 Apr 2021 17:49:57 +0800
Tag:    v3.9.7

MDL-71390 core: raise max_input_vars requirement for Moodle 3.11