Bump the dev-dependencies group with 1 update (#50)

Bumps the dev-dependencies group with 1 update: openshift/release.


---
updated-dependencies:
- dependency-name: openshift/release
  dependency-type: direct:production
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM registry.ci.openshift.org/openshift/release:golang-1.19 AS builder
+FROM registry.ci.openshift.org/openshift/release:golang-1.21 AS builder
 WORKDIR /go/src/github.com/openshift/cluster-machine-approver
 COPY . .
 RUN make build