[bot:release-v0.3.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/cache.Dockerfile

@@ -1,5 +1,5 @@
 ARG GO_BUILDER=registry.redhat.io/ubi9/go-toolset:9.7
-ARG RUNTIME=registry.redhat.io/ubi9/ubi-minimal@sha256:6fc28bcb6776e387d7a35a2056d9d2b985dc4e26031e98a2bd35a7137cd6fd71
+ARG RUNTIME=registry.redhat.io/ubi9/ubi-minimal@sha256:759f5f42d9d6ce2a705e290b7fc549e2d2cd39312c4fa345f93c02e4abb8da95
 FROM $GO_BUILDER AS builder
 
 WORKDIR /go/src/github.com/openshift-pipelines/tekton-caches
@@ -24,7 +24,8 @@ LABEL \
       description="Red Hat OpenShift Pipelines Tekton Caches" \
       io.k8s.display-name="Red Hat OpenShift Pipelines Tekton Caches" \
       io.k8s.description="Red Hat OpenShift Pipelines Tekton Caches" \
-      io.openshift.tags="pipelines,tekton,openshift,tekton-caches"
+      io.openshift.tags="pipelines,tekton,openshift,tekton-caches" \
+      cpe="cpe:/a:redhat:openshift_pipelines:1.20::el9"
 
 RUN groupadd -r -g 65532 nonroot && useradd --no-log-init -rm -u 65532 -g nonroot nonroot
 USER 65532