meson: bump wayland dep version to 1.23

libwayland 1.23 includes a wl_event_loop destroy signal fix which our
backends depend on to shut down correctly.

meson.build

@@ -105,7 +105,7 @@ internal_config = configuration_data()
 
 wayland_project_options = ['tests=false', 'documentation=false']
 wayland_server = dependency('wayland-server',
-	version: '>=1.22',
+	version: '>=1.23',
 	fallback: 'wayland',
 	default_options: wayland_project_options,
 )