build: Bump pulseaudio dependency

We need 12.99.3 in order to avoid deadlocks on Xwayland startup, see
https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/79a8efb45cb8304967baa2e8c6d6156478ce19d9

Closes: gnome-shell#2599
1 job for master in 4 minutes and 48 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed build-fedora #664717

00:04:48