Updating ose-machine-api-provider-azure images to be consistent with ART

Reconciling with https://github.com/openshift/ocp-build-data/tree/4226a9050f3e0ecf87c4ec509072192f7a6e965e/images/ose-machine-api-provider-azure.yml

.ci-operator.yaml

@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-8-release-golang-1.19-openshift-4.14
+  tag: rhel-8-release-golang-1.20-openshift-4.14

Dockerfile.rhel

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.19-openshift-4.14 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.14 AS builder
 WORKDIR /go/src/github.com/openshift/machine-api-provider-azure
 COPY . .
 # VERSION env gets set in the openshift/release image and refers to the golang version, which interferes with our own