loki update to 6.6.4-bb.1

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/loki/-/blob/6.6.4-bb.1/CHANGELOG.md

Package MR

big-bang/product/packages/loki!242 (merged)

For Issue

Closes #2100 (closed)

Upgrade Notices

N/A