[Merge] ~xypron/livecd-rootfs:umount into livecd-rootfs:ubuntu/master

[Michael Hudson-Doyle]

Approved, but I think Steve wants to wait for 24.04.7 to migrate before merging / uploading anything else.
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https://code.launchpad.net/~xypron/livecd-rootfs/+git/livecd-rootfs/+merge/431381
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~xypron/livecd-rootfs:umount into livecd-rootfs:ubuntu/master.