[gnome-control-center] Created tag 40.9

[Robert Ancell <rancell src gnome org>]

The signed tag '40.9' was created.

Tagger: Robert Ancell <robert ancell canonical com>
Date: 1644790722 +1300

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Changes since the last tag '40.7':

Boyuan Yang (1):
      Update Chinese (China) translation

Hui Wang (2):
      sound: clear the value on level_bar when stream is empty
      sound: update the volume-slider after getting a valid stream

Jan Beich (1):
      meson: drop unused argument for i18n.merge_file()

Robert Ancell (2):
      Post-release version bump
      40.9

Robert Mader (1):
      display-config: Do not invert order when constructing modes