Draft: grafana update to 7.3.1-bb.3

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/grafana/-/blob/7.3.1-bb.3/CHANGELOG.md

Package MR

big-bang/product/packages/grafana!64 (merged)

For Issue

Closes (link to issue here)

Upgrade Notices

n/a