libadwaita: update 1.6.0 -> 1.6.1

libadwaita: update 1.6.0 -> 1.6.1

=============
Version 1.6.1
=============

- Fix meson syntax in readme
- AdwAboutDialog/Window
  - Fix natural width
- AdwAlertDialog
  - Fix a crash when setting content-width/height before present()
- AdwBottomSheet
  - Fix natural height
  - Fix criticals in dispose in some cases
- AdwBreakpointBin
  - Fix natural size
- AdwClamp
  - Fix get/set_unit() version
- AdwExpanderRow
  - Make suffix spacing match action rows and entry rows
- AdwTabBar
  - Don't select tabs when clicking close or indicator buttons
  - Only handle middle clicks started and ended on the same tab
- AdwTabOverview
  - Only handle middle clicks started and ended on the same thumbnail
- AdwViewSwitcher
  - Have a minimum height outside header bars
- Docs
  - Indicate and explain out of gamut colors on CSS variables page
  - Update deprecated meson syntax
  - Typo fixes
  - Link clamp/layout/scrollable docs between each other
- Translation updates
  - Latvian
  - Thai

Signed-off-by: Markus Volk <f_l_k@t-online.de>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>