RHOAIENG-3359 - Switch rhel8 to ubi9 image in buildah task

[MarianMacik]

JIRA: RHOAIENG-3359

Description

Switches buildah image to use registry.redhat.io/ubi9/buildah:latest.

How Has This Been Tested?

PR check.

Merge criteria:

• [x] The commits are squashed in a cohesive manner and have meaningful messages.
• [ ] Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• [x] The developer has manually tested the changes and verified that the changes work

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: grdryn, MarianMacik

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/opendatahub-io/ai-edge/blob/main/OWNERS)~~ [MarianMacik,grdryn] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment