Updating ose-ibmcloud-machine-controllers-container image to be consi…

…stent with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/c78b2b27f47b41d5d59449c863f3dea6eaa988b7/images/ose-ibmcloud-machine-controllers.yml

.ci-operator.yaml

@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-9-release-golang-1.20-openshift-4.15
+  tag: rhel-9-release-golang-1.21-openshift-4.16

Dockerfile

@@ -1,4 +1,4 @@
-FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.20-openshift-4.15 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.21-openshift-4.16 AS builder
 WORKDIR /go/src/github.com/openshift/machine-api-provider-ibmcloud
 
 COPY . .
@@ -7,5 +7,5 @@ RUN unset VERSION \
  && GOPROXY=off NO_DOCKER=1 make build
 RUN mkdir -p /tmp/build && cp _output/linux/$(go env GOARCH)/machine-controller-manager /tmp/build/machine-controller-manager
 
-FROM registry.ci.openshift.org/ocp/4.15:base-rhel9
+FROM registry.ci.openshift.org/ocp/4.16:base-rhel9
 COPY --from=builder /tmp/build/machine-controller-manager /