Backport OpenShift CI to GitHub Action changes

[BradLugo]

Description

This backport PR does the following:

1. Enables GitHub Action container builds and pushes for releases branches and tags (in this case, for release-2.33) provided by:
   https://github.com/stackrox/scanner/pull/1376
2. Enables multiarch builds and multiarch container images provided by:
   https://github.com/stackrox/scanner/pull/1490

Associated OSCI PR: https://github.com/openshift/release/pull/53192

[openshift-ci[bot]]

@BradLugo: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/push-images	831a20b8006b36bb63e00c2c824e088946df4c5d	link	true	/test push-images
ci/prow/slim-e2e-tests	831a20b8006b36bb63e00c2c824e088946df4c5d	link	false	/test slim-e2e-tests
ci/prow/e2e-tests	831a20b8006b36bb63e00c2c824e088946df4c5d	link	false	/test e2e-tests

Full PR test history. Your PR dashboard.

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[RTann]

hmm not sure why we have these failures, though I believe it is ok to only support amd64 for this release, as we had done before. Future releases will support multiple

[BradLugo]

O.B.E - we're only supporting this change for 2.34+