[gegl] meson: depend on meson>=0.54.0

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 01a92a98d61de35bb8fbc9532d20cc7314cdec35
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun Dec 20 12:52:48 2020 +0100

    meson: depend on meson>=0.54.0
    
    babl already depends on this, having it here will warn people trying to
    build all of GIMP from source have an earlier warning.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index b55927823..4725ca48a 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@ project('gegl',
   'c', 'cpp',
   license: 'GPL3+',
   version: '0.4.28',
-  meson_version: '>=0.50.0',
+  meson_version: '>=0.54.0',
   default_options: [
     'c_std=gnu11',
     'cpp_std=gnu++14',