Bump coreos-assembler to Fedora 39

[jlebon]

Matches coreos/coreos-assembler#3653.

While we're here, use the Quay.io image instead since that's the future.

[mike-nguyen]

/lgtm

[jlebon]

/pj-rehearse ack

We'll test this in coreos/coreos-assembler#3653.

[openshift-ci-robot]

[REHEARSALNOTIFIER]
@jlebon: the pj-rehearse plugin accommodates running rehearsal tests for the changes in this PR. Expand 'Interacting with pj-rehearse' for usage details. The following rehearsable tests have been affected by this change:

Test name	Repo	Type	Reason
pull-ci-coreos-coreos-assembler-main-images	coreos/coreos-assembler	presubmit	Ci-operator config changed
pull-ci-coreos-coreos-assembler-main-rhcos	coreos/coreos-assembler	presubmit	Ci-operator config changed

Interacting with pj-rehearse

Comment: /pj-rehearse to run up to 10 rehearsals
Comment: /pj-rehearse skip to opt-out of rehearsals
Comment: /pj-rehearse {test-name}, with each test separated by a space, to run one or more specific rehearsals
Comment: /pj-rehearse more to run up to 20 rehearsals
Comment: /pj-rehearse max to run up to 35 rehearsals
Comment: /pj-rehearse auto-ack to run up to 10 rehearsals, and add the rehearsals-ack label on success
Comment: /pj-rehearse abort to abort all active rehearsals

Once you are satisfied with the results of the rehearsals, comment: /pj-rehearse ack to unblock merge. When the rehearsals-ack label is present on your PR, merge will no longer be blocked by rehearsals.
If you would like the rehearsals-ack label removed, comment: /pj-rehearse reject to re-block merging.

[jlebon]

/pj-rehearse ack

[dustymabe]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dustymabe, jlebon, mike-nguyen

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• ci-operator/config/coreos/coreos-assembler/OWNERS [dustymabe,jlebon,mike-nguyen]

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[openshift-ci]

@jlebon: all tests passed!

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