loki update to 6.6.2-bb.4

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/loki/-/blob/6.6.2-bb.4/CHANGELOG.md

Package MR

big-bang/product/packages/loki!235 (merged)

For Issue

Closes (link to issue here)

Upgrade Notices

n/a