feat: support graceful client secret rotation

feat: support graceful client secret rotation

Author: ppuha

Dockerfile

@@ -31,6 +31,7 @@ RUN /opt/keycloak/bin/kc.sh build \
     --http-relative-path=/auth \
     --metrics-enabled=true \
     --health-enabled=true \
+    --features=client-secret-rotation \
     --features-disabled=persistent-user-sessions
 
 FROM quay.io/keycloak/keycloak:$BASE_IMAGE_TAG