[release-1.6] 🧹 Migrate to buildah action for building multi-arch images

[cardil]

Changes

• 🧹 Migrate to buildah action for building multi-arch images

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[cardil]

/unhold

[cardil]

/cc @mgencur

[cardil]

/cc @dsimansk

[cardil]

/hold

wait for discussion on #270 to resolve

[cardil]

/unhold

[dsimansk]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cardil, dsimansk

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Details

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• OWNERS [dsimansk]

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[cardil]

/cherrypick release-1.7

[openshift-cherrypick-robot]

@cardil: new pull request created: #283

Details

In response to this:

/cherrypick release-1.7

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