[mutter] build: Bump mesa requirement to 21.3

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

commit d7e1af98acdc5777dd95fd52e6074fa41a72af5c
Author: Jonas Ådahl <jadahl gmail com>
Date:   Tue May 17 15:24:33 2022 +0200

    build: Bump mesa requirement to 21.3
    
    It contains `gbm_bo_create_with_modifiers2()`, which will be used in a
    test case testing unredirection.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2417>

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index d29a948a51..be2909c2c4 100644
--- a/meson.build
+++ b/meson.build
@@ -45,7 +45,7 @@ wayland_protocols_req = '>= 1.25'
 
 # native backend version requirements
 libinput_req = '>= 1.19.0'
-gbm_req = '>= 17.3'
+gbm_req = '>= 21.3'
 
 # screen cast version requirements
 libpipewire_req = '>= 0.3.33'