MFH: r515492 r515563 r516101

www/gitlab-ce: upgrade to 12.4.0.
Changelog:
https://about.gitlab.com/blog/2019/10/22/gitlab-12-4-released/

Change RUN_DEPENDS from rubygem-rubyzip to rubygem-rubyzip12

• Bump PORTREVISION for dependency change

www/gitlab-ce: security update to 12.4.1.
Changelog:
https://about.gitlab.com/blog/2019/10/30/security-release-gitlab-12-dot-4-dot-1-released/

Security: 6eddfa51-fb44-11e9-86e9-001b217b3468

Approved by: ports-secteam (miwi)