Increment libvirt revision

Closes #27243.
libvirt: update 1.2.1 bottle.
Increment revisions on nettle dependents
Increment revisions on gnutls dependents
yafc 1.3.2

Closes #24688.
Closes #26927.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pulseaudio 4.0

Closes #22846.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
style fixes