Build IPA for release branches

[adilGhaffarDev]

Currently, we are using the same IPA image across all release branches.
We already have a test matrix defined here: Test Matrix.

To improve reliability and alignment with specific releases, we should either:

• Build IPA image for each test scenario, or
• Create a separate pipeline script that builds and uploads IPA images to Artifactory, so that the tests can consume the appropriate versions.

[Rozzii]

/triage accepted
Let's make them official release artifacts too.

[Rozzii]

/kind ci

[metal3-io-bot]

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/lifecycle stale

[tuminoid]

/remove-lifecycle stale