gvfs-gdu-volume-monitor: Add missing build dependency on GTK
gvfs-gdu-volume-monitor: Add missing build dependency on GTK

Fixes errors like
git/daemon/gvfsbackendrecent.c:15:21: fatal error: gtk/gtk.h: No such
file or directory
|  #include <gtk/gtk.h>

Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

koenkooi/meta-photography,kraj/meta-photography