gitlab update to 7.6.0-bb.0

Package Merge Request

Package Changes

• GitLab images to 16.6.0
• chart to 7.6.0
• gluon to 0.4.4
• bumped up memory allocation for cypress test, was receiving OOMKilled in pipeline

Package MR

big-bang/product/packages/gitlab!229 (merged)

For Issue

Closes big-bang/product/packages/gitlab#218 (closed)