[geary/mjog/flatpak-ci-handy-submodule] Update libhandy submodule to 0.0.13

[Michael Gratton <mjog src gnome org>]

commit af3b3fd8db3d0d24dfa3f079039bdc48df1cc3a4
Author: Michael Gratton <mike vee net>
Date:   Thu Jan 23 22:56:17 2020 +1100

    Update libhandy submodule to 0.0.13

 subprojects/libhandy | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/subprojects/libhandy b/subprojects/libhandy
index b6ff87ea..7a193d76 160000
--- a/subprojects/libhandy
+++ b/subprojects/libhandy
@@ -1 +1 @@
-Subproject commit b6ff87ea07c69171aa7c743d8c2740527b525271
+Subproject commit 7a193d7692c9c76a1a94f17c4d30b585f77d177c