Bump docker/build-push-action from 6.0.1 to 6.2.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.0.1 to 6.2.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@94f8f8c...1556069)

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

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

.github/workflows/k8s-content-pr.yaml

@@ -84,7 +84,7 @@ jobs:
             org.opencontainers.image.vendor='Compliance Operator Authors'
       - name: Build container images and push
         id: docker_build
-        uses: docker/build-push-action@94f8f8c2eec4bc3f1d78c1755580779804cb87b2 # v6
+        uses: docker/build-push-action@15560696de535e4014efeff63c48f16952e52dd1 # v6
         with:
           context: .
           file: ./Dockerfiles/ocp4_content