keycloak update to 2.4.3-bb.2

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/keycloak/-/blob/2.4.3-bb.2/CHANGELOG.md

Package MR

big-bang/product/packages/keycloak!251 (merged)

For Issue

Closes big-bang/product/packages/keycloak#211 (closed)

Upgrade Notices

N/A