cli/config: wrap argv in list for Gio.Application.run (PyGObject 3.56)

The remote-config path passes a yaml.dump(...) string to
Gio.Application.run(), whose argv parameter is Optional[list[str]].
Pre-3.56 PyGObject tolerated a bare str; the marshaller refactor in
the 3.55 dev series (MR !487) tightened this, and 3.56 now raises
TypeError: Unable to marshal str as an array.

Wrap the YAML string in a 1-element list. The receiver in
solaar.ui._command_line already does yaml.safe_load("".join(args)) on
the argv, so a 1-element argv reconstructs the original YAML cleanly
under both old and new PyGObject.

lib/solaar/cli/config.py

@@ -231,7 +231,7 @@ def run(receivers, args, _find_receiver, find_device):
         argl = ["config", dev.serial or dev.unitId, setting.name]
         argl.extend([a for a in [args.value_key, args.extra_subkey, args.extra2] if a is not None])
         args = yaml.dump(argl)
-        application.run(args)
+        application.run([args])
     else:
         if dev.persister and setting.persist:
             dev.persister[setting.name] = setting._value