gitlab update to 8.3.6-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/gitlab/-/blob/8.3.6-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/gitlab!338 (merged)

For Issue

Closes big-bang/product/packages/gitlab#292

Upgrade Notices

N/A