[bug#65645] [PATCH] gnu: qemu: Update to 8.1.0.

[Kaelyn]

Hi,

Thank you for the qemu update, Maxim! I'd recently tried to update qemu myself 
after seeing that 8.1 had been released, but got stuck after making maybe half 
of the package changes that were needed (not counting the revised patch to skip 
tests).

I have built qemu 8.1.0 locally and successfully tested it with an x86-64 VM I 
have available. I've also looked through the diff of the patch, and it seems 
pretty reasonable to me.

Cheers,
Kaelyn