loki update to 6.6.2-bb.1

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/loki/-/blob/6.6.2-bb.1/CHANGELOG.md

Package MR

big-bang/product/packages/loki!213 (merged)

For Issue

Closes big-bang/product/packages/loki#143 (closed)

Upgrade Notices

Changes need to be made to the universe chart that will be added in the resulting bb mr.

RKE Users must set .Values.loki.global.dnsService to rke2-coredns-rke2-coredns when in simple scalable mode for the gateway pod to work.