CI: update OpenStack to 2024.1 (Caracal)

[EmilienM]

What this PR does / why we need it:

Update CI to use the latest stable version of OpenStack: Caracal.

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[jichenjc]

/approve

I remember we used to have some doc about the CI version and test matrix, seems it's gonna (which I can't find them anymore)
so this change is good

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jichenjc

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[EmilienM]

/approve

I remember we used to have some doc about the CI version and test matrix, seems it's gonna (which I can't find them anymore) so this change is good

we have removed this doc some time ago: #2051

[jichenjc]

we have removed this doc some time ago: #2051

thanks for the info, didn't pay attention to that PR

[MaysaMacedo]

/lgtm