[gtksourceview] Post-release version bump

[Christian Hergert <chergert src gnome org>]

commit 3c360d5a28846a745d7024a551d4dd140a6d96ce
Author: Christian Hergert <chergert redhat com>
Date:   Sat Sep 17 12:52:20 2022 -0700

    Post-release version bump

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 3d62da43..3a51c97d 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('gtksourceview', 'c',
-          version: '5.6.0',
+          version: '5.6.1',
           license: 'LGPL-2.1-or-later',
     meson_version: '>= 0.60.0',
   default_options: [ 'c_std=gnu99',