Fix branch used in aum-rollback-bootcount

While backporting the test case to v2024 the branch used during the test was not updated, so let's fix that.

Signed-off-by: Walter Lozano walter.lozano@collabora.com

requested review from @daissi

assigned to @wlozano

mentioned in merge request docs/apertis-website!672 (merged)

oops I missed that!

merged