[gnome-system-monitor] Bump version to 40.alpha

[Robert Roth <robertroth src gnome org>]

commit 81f25890aa08aab6ec515bafd9cdfaba35ef5e94
Author: Robert Roth <robert roth off gmail com>
Date:   Sun Oct 18 10:27:10 2020 +0300

    Bump version to 40.alpha

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 30e84eff..19fa48d1 100644
--- a/meson.build
+++ b/meson.build
@@ -4,7 +4,7 @@ project('gnome-system-monitor',
   default_options : [
     'c_std=c11', 'cpp_std=c++11', 'warning_level=3'
   ],
-  version: '3.38.0',
+  version: '40.alpha',
   meson_version: '>=0.50.0',
 )