[gnome-builder/wip/gtk4-port] build: bump version for 43 development

[Christian Hergert <chergert src gnome org>]

commit cec68b710c453bc963d1917a7e5bcf2e7221ec60
Author: Christian Hergert <chergert redhat com>
Date:   Thu Sep 23 15:49:41 2021 -0700

    build: bump version for 43 development
    
    Our GTK 4 port will be delayed until GNOME 43.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index f9d2b1bbe..b3dca7518 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project('gnome-builder', 'c',
           license: 'GPL3+',
-          version: '42.alpha0',
+          version: '43.alpha0',
     meson_version: '>= 0.59.1',
   default_options: [ 'c_std=gnu11',
                      'cpp_std=gnu++2a',