Updating telemeter-container image to be consistent with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/9dc2a375bf335e7e4e3d7e75abc5c3bdbb0c0e98/images/telemeter.yml

.ci-operator.yaml

@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-8-release-golang-1.20-openshift-4.15
+  tag: rhel-9-release-golang-1.20-openshift-4.15

Dockerfile

@@ -1,4 +1,4 @@
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.15
+FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.20-openshift-4.15
 ENV GOFLAGS="-mod=vendor"
 COPY . /go/src/github.com/openshift/telemeter
 RUN cd /go/src/github.com/openshift/telemeter && \
@@ -7,7 +7,7 @@ RUN cd /go/src/github.com/openshift/telemeter && \
     go build ./cmd/rhelemeter-server && \
     go build ./cmd/authorization-server
 
-FROM registry.ci.openshift.org/ocp/4.15:base
+FROM registry.ci.openshift.org/ocp/4.15:base-rhel9
 LABEL io.k8s.display-name="OpenShift Telemeter" \
       io.k8s.description="" \
       io.openshift.tags="openshift,monitoring" \