Bump docker/build-push-action from 5.4.0 to 6.1.0 (#323)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5.4.0 to 6.1.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@ca052bb...31159d4)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -97,7 +97,7 @@ jobs:
             description="The NGINX Ingress Operator is a Kubernetes/OpenShift component which deploys and manages one or more NGINX/NGINX Plus Ingress Controllers"
 
       - name: Build Image
-        uses: docker/build-push-action@ca052bb54ab0790a636c9b5f226502c73d547a25 # v5.4.0
+        uses: docker/build-push-action@31159d49c0d4756269a0940a750801a1ea5d7003 # v6.1.0
         with:
           context: "."
           cache-from: type=gha