[gegl] configure: depend on babl-0.1.63 or newer

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

commit ee8a8b8abc5978a07bc19bd3a722e639b36d0bf1
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri May 17 18:40:41 2019 +0200

    configure: depend on babl-0.1.63 or newer

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 50428c358..e7a98216d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -38,7 +38,7 @@ m4_define([gegl_stable],
 m4_define([gimp_full_name], [Generic Graphical Library])
 
 # required versions of external libraries
-m4_define([babl_required_version], [0.1.62])
+m4_define([babl_required_version], [0.1.63])
 m4_define([cairo_required_version], [1.12.2])
 m4_define([gdk_pixbuf_required_version], [2.32.0])
 m4_define([introspection_required_version], [1.32.0])