main/postmarketos-ui-sway: depend on pulseaudio (MR 2338)

Pulseaudio is used by other graphical UIs to manage audio, so having it
installed for sway is useful for having audio working "out of the box"

[ci:skip-build] already built successfully in CI

main/postmarketos-ui-sway/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Oliver Smith <ollieparanoid@postmarketos.org>
 pkgname=postmarketos-ui-sway
 pkgver=3
-pkgrel=0
+pkgrel=1
 pkgdesc="(Wayland) Tiling WM, drop-in replacement for i3wm (DOES NOT RUN WITHOUT HW ACCELERATION!)"
 url="https://postmarketos.org"
 arch="noarch"
@@ -12,6 +12,7 @@ depends="
 	elogind
 	networkmanager
 	postmarketos-base-ui
+	pulseaudio
 	sway
 	tinydm
 	tinydm-openrc