Update CI to use Go 1.25

Updates .ci-operator.yaml to use golang-1.25 build root image
to match the go.mod requirement of Go 1.25.6.

This fixes CI failures where Go 1.24.11 was being used.

Author: dkhater-redhat

.ci-operator.yaml

@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-9-release-golang-1.24-openshift-4.22
+  tag: rhel-9-release-golang-1.25-openshift-4.22

Dockerfile.rhel7

@@ -1,6 +1,6 @@
 # THIS FILE IS GENERATED FROM Dockerfile DO NOT EDIT
 # Use RHEL 9 as the primary builder base for the Machine Config Operator
-FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.24-openshift-4.22 AS rhel9-builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.25-openshift-4.22 AS rhel9-builder
 ARG TAGS=""
 WORKDIR /go/src/github.com/openshift/machine-config-operator
 COPY . .
@@ -11,7 +11,7 @@ ENV GOMODCACHE="/go/rhel9/pkg/mod"
 RUN make install DESTDIR=./instroot-rhel9 && tar -C instroot-rhel9 -cf instroot-rhel9.tar .
 
 # Add a RHEL 8 builder to compile the RHEL 8 compatible binaries
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.24-openshift-4.22 AS rhel8-builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.25-openshift-4.22 AS rhel8-builder
 ARG TAGS=""
 WORKDIR /go/src/github.com/openshift/machine-config-operator
 # Copy the RHEL 8 machine-config-daemon binary and rename