Keycloak: Update BB Base to 2.0.0

Package Merge Request

Package Changes

https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/keycloak/-/blob/18.1.1-bb.6/CHANGELOG.md

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/keycloak/-/merge_requests/78

For Issue

For https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/1233

chart/values.yaml

@@ -1294,7 +1294,7 @@ addons:
     git:
       repo: https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/keycloak.git
       path: "./chart"
-      tag: "18.1.1-bb.5"
+      tag: "18.1.1-bb.6"
 
     database:
       # -- Hostname of a pre-existing database to use for Keycloak.