feat: enable s390x prometheus check

[nestoracunablanco]

As of version 2.15.2, there is no available container image for s390x. However, version 2.25.2 does provide support for this architecture. This update enables the checks to run on s390x.

What this PR does / why we need it: s390x enablement

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Release note:

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[sonarqubecloud]

Quality Gate passed

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[oshoval]

Thanks
Maybe worth to add it to kubevirtci (if it is used there ?, otherwise fine here)

but we can just continue the current flow as is, and do what you suggested
/lgtm

[oshoval]

/test all

[RamLavi]

/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RamLavi

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