[mutter] meson: Bump required libinput version to 1.18.0

[Marge Bot <marge-bot src gnome org>]

commit 931fca1bdc005e1836b7895efe8e4fb9e0c59db4
Author: Robert Mader <robert mader posteo de>
Date:   Fri Jul 16 21:26:48 2021 +0200

    meson: Bump required libinput version to 1.18.0
    
    This is needed for https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1763
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1933>

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 630d404ec5..9c184ed205 100644
--- a/meson.build
+++ b/meson.build
@@ -44,7 +44,7 @@ wayland_server_req = '>= 1.18'
 wayland_protocols_req = '>= 1.21'
 
 # native backend version requirements
-libinput_req = '>= 1.15.0'
+libinput_req = '>= 1.18.0'
 gbm_req = '>= 17.3'
 
 # screen cast version requirements