win32 bundle: updated gdk-pixbuf package

[Keith Moyer <gnome-bugzilla keithmoyer com>]

The "Download for Windows (32-bit)"
(http://www.gtk.org/download/win32.php) page that provides
pre-compiled bundles of GTK+ components states that "A new bundle will
ideally be provided here whenever one of the member packages has been
updated".  However, the version of gdk-pixbuf that is provided is over
a year old; there have been eight newer releases of gdk-pixbuf in that
time.

What is typically needed to include newer versions of components?
Specifically, I'm interested in the bundle picking up _any_ newer
version than it currently does, as they all include the fix for bug
655755 (https://bugzilla.gnome.org/show_bug.cgi?id=655755).  Having
that fix included in the bundle would allow Pidgin to finally resolve
a long-standing bug (https://developer.pidgin.im/ticket/11858).

Thanks,

Keith Moyer
(not affiliated with GTK+ or Pidgin, but did supply the gdk-pixbuf fix
in 655755)