keycloak update to 18.4.3-bb.13

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/keycloak/-/blob/18.4.3-bb.13/CHANGELOG.md

Package MR

big-bang/product/packages/keycloak!150 (merged)

For Issue

Closes big-bang/product/packages/keycloak#114 (closed)

Upgrade Notices

N/A