GUPnP 1.2.7 and dleyna-dbus-connector 0.4.1

[Jens Georg <mail jensge org>]

Hello everyone,

GUPnP 1.2.7 and dleyna-dbus-connector 0.4.1 are available.

They should fix issues with dleyna-renderer crashing on shutdown,
especially if launched indirectly through GNOME overview search.

dLeyna DBus connector 0.4.1:
 - Fix use-after-free on shutdown due to missing
   reference on bus

GUPnP 1.2.7:

- Fix build with -Wformat-security=error
- Bump required GLib version to 2.66
- Fix some introspection annotations
- Add missing varargs functions to vapi
- Revert fix from 1.2.5 which causes managed control points to
  live too long

All contributors to this release:
 - Jens Georg <mail jensge org>
 - Bastien Nocera <hadess hadess net>
 - Andreas Müller <schnitzeltony gmail com>