Merge branch 'mmartin-keycloak-update' into 'master'

bigbang keycloak update

Closes platform-one/big-bang/apps/security-tools/keycloak#51

See merge request platform-one/big-bang/bigbang!1536

chart/values.yaml

@@ -1262,7 +1262,7 @@ addons:
     git:
       repo: https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/keycloak.git
       path: "./chart"
-      tag: "17.0.1-bb.4"
+      tag: "18.0.0-bb.1"
 
     database:
       # -- Hostname of a pre-existing database to use for Keycloak.