Git commits in Moodle 3.10.8 by Bas Brands

commit d7ebcac861f5feb8fcd0e52a48c8b6b8a4bbd4fd
Author: Bas Brands <bas@moodle.com>
Date:   Thu, 06 May 2021 15:28:21 +0800
Tag:    v3.10.8

MDL-71550 theme_boost: improve dropdown hover styles