[gegl] depend on babl-0.1.46

[Øyvind Kolås <ok src gnome org>]

commit 427e699846acdd98183ac1d889b5d68e680e7462
Author: Øyvind Kolås <pippin gimp org>
Date:   Tue Apr 10 23:27:36 2018 +0200

    depend on babl-0.1.46

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 2a0e59d..24617ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,7 @@ m4_define([gegl_stable],
 m4_define([gimp_full_name], [Generic Graphical Library])
 
 # required versions of external libraries
-m4_define([babl_required_version], [0.1.44])
+m4_define([babl_required_version], [0.1.46])
 m4_define([cairo_required_version], [1.12.2])
 m4_define([exiv2_required_version], [0.25])
 m4_define([gdk_pixbuf_required_version], [2.32.0])