libadwaita: update 1.4.2 -> 1.4.3

libadwaita: update 1.4.2 -> 1.4.3

=============
Version 1.4.3
=============

- AdwAboutWindow
  - Don't pre-select the first section on the Legal page
- AdwHeaderBar
  - Fix visibility after changing :show-back-button
- AdwPreferencesWindow
  - Fix :visible-page and :visible-page-name docs
- AdwViewSwitcherBar
  - Fix a warning when empty
- Translation updates
  - French
  - Greek
  - Norwegian Bokmål

Signed-off-by: Markus Volk <f_l_k@t-online.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>