[gegl/wip/pippin/reverted-babl] meson: revert build requirement to 0.1.78

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

commit d0cd84810d8c384c567fbf088e8ab9a793b35529
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Mar 25 17:07:35 2021 +0100

    meson: revert build requirement to 0.1.78

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index e38ecd2ce..cf9cb8b17 100644
--- a/meson.build
+++ b/meson.build
@@ -162,7 +162,7 @@ math    = cc.find_library('m', required: false)
 libdl   = cc.find_library('dl', required : false)
 thread  = dependency('threads')
 
-babl      = dependency('babl',          version: '>=0.1.84')
+babl      = dependency('babl',          version: '>=0.1.78')
 glib      = dependency('glib-2.0',      version: '>=2.44.0')
 gobject   = dependency('gobject-2.0',   version: '>=2.44.0')
 gmodule   = dependency('gmodule-2.0',   version: '>=2.44.0')