Promtail: Updated to 2.7.0

Package Merge Request

Package Changes

https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/promtail/-/blob/6.7.2-bb.0/CHANGELOG.md

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/promtail/-/merge_requests/21

For Issue

Closes https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/promtail/-/issues/8