[gimp/gimp-2-10] configure.ac: bump versions for the 2.10.20 release

[Michael Natterer <mitch src gnome org>]

commit 68d21512bfd8639f57ebf5002043e4bfe4adb835
Author: Michael Natterer <mitch gimp org>
Date:   Sun Jun 7 22:06:17 2020 +0200

    configure.ac: bump versions for the 2.10.20 release

 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1b5f30096f..38ebdd1d9d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,11 +11,11 @@ AC_PREREQ(2.54)
 
 m4_define([gimp_major_version], [2])
 m4_define([gimp_minor_version], [10])
-m4_define([gimp_micro_version], [19])
+m4_define([gimp_micro_version], [20])
 m4_define([gimp_real_version],
           [gimp_major_version.gimp_minor_version.gimp_micro_version])
 m4_define([gimp_version], [gimp_real_version])
-m4_define([gimp_interface_age], [19])
+m4_define([gimp_interface_age], [20])
 m4_define([gimp_binary_age],
           [m4_eval(100 * gimp_minor_version + gimp_micro_version)])