Git commits in Moodle 3.7.5 by Brendan Cox

commit 67d4f4ea654fd9d869bdccb54ac023de20513651
Author: Brendan Cox <brendan.cox@totaralearning.com>
Date:   Wed, 02 Oct 2019 06:35:31 +0800
Tag:    v3.7.5

MDL-67175 session: set SameSite=None for Chrome 78 and above