Next CSB release of Jenkins 2.479.3 and its update center is now available on DNO.OCP-Hub OpenShift. There is an updated deadline specified by Product Security to 2025-04-25.
Follow this guide to perform the upgrade - https://gitlab.cee.redhat.com/ccit/jenkins-csb/-/blob/csb-2.479.3/cci-jd/docs/howto-configuration-as-code.md#upgrading-to-new-jenkins-csb-version