www/davical: update 1.1.2 -> 1.1.5

• moved MASTER_SITE to gitlab
• Please note that there are long-standing sync issues with KDE Korganizer (and Kontact) clients when there are multiple clients syncing to the same calendar. For example, see https://bugs.kde.org/show_bug.cgi?id=325224

PR: 215847
Changes: https://gitlab.com/davical-project/davical/blob/master/ChangeLog
Submitted by: packet@nerdheim.de