dbus-glib: Upgrade 0.112 -> 0.114

dbus-glib: Upgrade 0.112 -> 0.114

License-Update: Upstream added SPDX tags and more license information. The
main license is AFL-2.1 | GPL-2.0-or-later however some files are
LGPL-2.1-or-later or MIT licensed. The bash completiion plugin is
GPL-2.0-or-later only.

Therefore:
* Add checksums for the separated license files
* Update the main LICENSE
* Specify the correct license for the bash completion plugin

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>