Updating ose-cluster-image-registry-operator builder & base images to…

… be consistent with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/ac81dd4ff0bd57c4e75058d25b40615b92948259/images/ose-cluster-image-registry-operator.yml

Dockerfile

@@ -1,9 +1,9 @@
-FROM registry.svc.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.6 AS builder
+FROM registry.svc.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.7 AS builder
 WORKDIR /go/src/github.com/openshift/cluster-image-registry-operator
 COPY . .
 RUN make build
 
-FROM registry.svc.ci.openshift.org/ocp/4.6:base
+FROM registry.svc.ci.openshift.org/ocp/4.7:base
 COPY images/bin/entrypoint.sh /usr/bin/
 COPY manifests/image-references manifests/0* /manifests/
 COPY vendor/github.com/openshift/api/imageregistry/v1/*-crd.yaml /manifests/