community/pulseaudio: upgrade to 15.0

>>> Size difference for libpulse: 1368 KiB -> 1364 KiB
--- filelist-libpulse-old
+++ filelist-libpulse
@@ -7,8 +7,8 @@
 usr/lib/libpulse-simple.so.0
 usr/lib/libpulse-simple.so.0.1.1
 usr/lib/libpulse.so.0
-usr/lib/libpulse.so.0.23.0
+usr/lib/libpulse.so.0.24.0
 usr/lib/pulseaudio/
-usr/lib/pulseaudio/libpulsecommon-14.2.so
-usr/lib/pulseaudio/libpulsecore-14.2.so
+usr/lib/pulseaudio/libpulsecommon-15.0.so
+usr/lib/pulseaudio/libpulsecore-15.0.so
 usr/lib/pulseaudio/libpulsedsp.so