[bot:release-v1.20.x] Update Dockerfile CPE labels and base images

Add CPE label: cpe="cpe:/a:redhat:openshift_pipelines:1.20::el9"
Update UBI9 base image to latest

Author: openshift-pipelines-bot

.konflux/dockerfiles/console-plugin.Dockerfile

@@ -52,4 +52,4 @@ LABEL \
       io.k8s.display-name="Red Hat OpenShift Pipelines Console Plugin" \
       io.k8s.description="Red Hat OpenShift Pipelines Console Plugin" \
       io.openshift.tags="pipelines,tekton,openshift" \
-      cpe="cpe:/a:redhat:openshift_pipelines:1.21::el9"
+      cpe="cpe:/a:redhat:openshift_pipelines:1.20::el9"