[gegl] configure: bump cairo, lcms and rsvg required versions

[Øyvind Kolås <ok src gnome org>]

commit 15ec7e8be9607bac942fb956084551a0e9680805
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Oct 9 13:07:46 2017 +0200

    configure: bump cairo, lcms and rsvg required versions
    
    Bumping to match requirements in GIMPs configure.ac.

 configure.ac |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 6a4b4bf..a1d51c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -38,16 +38,16 @@ m4_define([gimp_full_name], [Generic Graphical Library])
 
 # required versions of external libraries
 m4_define([babl_required_version], [0.1.34])
-m4_define([cairo_required_version], [0.0.0])
+m4_define([cairo_required_version], [1.12.2])
 m4_define([exiv2_required_version], [0.25])
 m4_define([gdk_pixbuf_required_version], [2.32.0])
 m4_define([introspection_required_version], [1.32.0])
 m4_define([glib_required_version], [2.44.0])
 m4_define([graphviz_required_version], [0.0.0])
 m4_define([jasper_required_version], [1.900.1])
-m4_define([lcms_required_version], [2.2])
+m4_define([lcms_required_version], [2.8])
 m4_define([lensfun_required_version], [0.2.5])
-m4_define([librsvg_required_version], [2.14.0])
+m4_define([librsvg_required_version], [2.40.6])
 m4_define([libv4l2_required_version], [1.0.1])
 m4_define([lua_required_version], [5.1.0])
 m4_define([openexr_required_version], [0.0.0])