AUM upgrade branch fails on amd64 on all releases

Background

The test aum-offline-upgrade-branch fails for amd64 on v2024 and v2025dev3. This started to happen after tests/apertis-test-cases!631 (merged) which was intended to fix an issue with RPI4 #567 (closed).

As reference #364 (closed)

Reproducibility

How often the issue is hit when repeating the steps to reproduce and changing nothing?

Put the ✅ in the most appropriate entry:

1. ✅ always
2. often, but not always
3. rarely

Impact of bug

How severe is the bug? Does it render an image unbootable? Is it a security issue? Does it prevent specific applications from working? What is the impact? Does this bug affect a critical component? Does it cause something else to not work? How often is the bug likely to be found by a user? For example, every boot or once per year?

Outcomes

TBD

Management data

This section is for management only, it should be the last one in the description.

/cc @andrunko @em @Balasubramanian @sudarshan @wlozano

Phabricator link: https://phabricator.apertis.org/T10539