apparmor: Fix rules for /dev/snd/ access

Wireplumber fails to create Alsa audio devices as AppArmor prevents it to
access /dev/snd/ directory.

Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>

debian/apparmor.d/usr.bin.wireplumber

@@ -39,6 +39,7 @@ profile /usr/bin/wireplumber {
   # Character device 116:x is ALSA
   /run/udev/data/c116:*                        r,
   /dev/video*                                  rw,
+  /dev/snd/                                    r,
   owner @{PROC}/*/stat			       r,
   owner @{PROC}/*/fd/			       r,
   owner @{PROC}/*/fd/*			       r,