QubesOS 4.1 Signed Weekly Builds

@fepitre Any news on this?
Following the post:

It would be nice to be able to test this easily (while as you know, detached signed ISOs facilitates integrity+authenticity).

Downloading https://openqa.qubes-os.org/tests/55506/asset/iso/Qubes-202212113-4.2-x86_64.iso now but would be better if iso and iso.asc were accessible from