Bug#1030526: live-build: Fails to build bookworm, due to firmware-linux

[Witold Baryluk <witold.baryluk@gmail.com>]

Package: live-build
Version: 1:20230131
Followup-For: Bug #1030526
X-Debbugs-Cc: witold.baryluk@gmail.com

Oo. A new archive area / suite. That must be new indeed, and explains why
it broke.

Using non-free-firmware archive area did help! (my build fails at the
moment, due to some pulseaudio-module-zeroconf dependency issue, but that
is probably just transient issue in the archive, not live-build issue).

I also modified some live-build files to install also firmware-misc-non
free from that area.

Thank you Roland.

PS. I will try 'lb config' without root next time. (looks to be working)