Merge branch 'update-keycloak-tag-18.2.1-bb.4' into 'master'

Keycloak Security Context

See merge request platform-one/big-bang/bigbang!2139

chart/values.yaml

@@ -1358,7 +1358,7 @@ addons:
     git:
       repo: https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/keycloak.git
       path: "./chart"
-      tag: "18.2.1-bb.3"
+      tag: "18.2.1-bb.4"
 
     database:
       # -- Hostname of a pre-existing database to use for Keycloak.