Security update for gitlab to 10.6.5.

Reviewed by: eugen_grosbein.net, tz (mentor)
Approved by: eugen_grosbein.net, tz (mentor)
MFC after: 1 day
MFH: 2018Q2
Security: 9dfe61c8-4d15-11e8-8f2f-d8cb8abf62dd
Differential Revision: https://reviews.freebsd.org/D15249