edk2-ovmf introduced a bug [1] and results libvirt/qemu errors
It's going to be fixed in next rebase to libvirt 7.4.0 - but let's pin for now.
[1]: https://bugzilla.redhat.com/show_bug.cgi?id=1961558#c10
Change-Id: I0cb0512ef40c48353d582b1c37a446f251b79ac7