MFH: r483499 r483733

Renamed the binary installed from github-markup to gitlab-markup to fix a file collision caused by package rubygem-github-markup.

Approved by: mentors (implicit)

Upgrade to 1.6.5 which includes upstream now the binary rename, so patch removed for it.

Approved by: mentors (implicit)

Approved by: ports-secteam (miwi)