Updated gitlab git tag

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/apps/developer-tools/gitlab/-/blob/6.8.0-bb.0/CHANGELOG.md

Package MR

https://repo1.dso.mil/big-bang/apps/developer-tools/gitlab/-/merge_requests/172

For Issue

Closes https://repo1.dso.mil/big-bang/apps/developer-tools/gitlab/-/issues/172