gitlab update to 8.7.4-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/gitlab/-/blob/8.7.4-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/gitlab!362 (merged)

For Issue

Closes big-bang/product/packages/gitlab#304 (closed)

Upgrade Notices

N/A