promtail update to 6.16.2-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/promtail/-/blob/6.16.2-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/promtail!67 (merged)

For Issue

Closes big-bang/product/packages/promtail#40 (closed)

Upgrade Notices

Even though this is a major release, there are no known breaking changes with our current deployment style.