Updating ose-route-controller-manager-container image to be consisten…

…t with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/4022cd290f00a44d667dda03f2d78d84a488c7ed/images/ose-route-controller-manager.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-8-release-golang-1.21-openshift-4.16

Dockerfile

@@ -1,9 +1,9 @@
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.15 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.21-openshift-4.16 AS builder
 WORKDIR /go/src/github.com/openshift/route-controller-manager
 COPY . .
 RUN make build --warn-undefined-variables
 
-FROM registry.ci.openshift.org/ocp/4.15:base
+FROM registry.ci.openshift.org/ocp/4.16:base
 COPY --from=builder /go/src/github.com/openshift/route-controller-manager/route-controller-manager /usr/bin/
 LABEL io.k8s.display-name="OpenShift Route Controller Manager Command" \
       io.k8s.description="OpenShift is a platform for developing, building, and deploying containerized applications." \