[gtk] (9 commits) ...Merge branch 'jx/hi-res-scrolling' into 'main'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  fb100d7... build: Update Wayland to >= 1.21.0
  51ca454... gdk/events: Add constructor for high-resolution scroll even
  6ebb38e... gdk/events: Set discrete scroll deltas in its constructor
  fc3aca8... gdk/wayland: Calculate discrete scroll direction in its hel
  ed0a2a2... gdk/wayland: Handle high-resolution scroll events
  37a561e... gdk/x11: Handle high-resolution scroll events
  95860d4... gtkeventcontrollerscroll: Always accumulate discrete deltas
  6a7136d... ci: Disable -Werror on wayland submodule
  bbd6fda... Merge branch 'jx/hi-res-scrolling' into 'main'