[gtksourceview] build: post-release bump

[Christian Hergert <chergert src gnome org>]

commit 6d9960f3cac87c63af1ed5577bc3f4327a88095e
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jul 19 16:14:14 2021 -0700

    build: post-release bump

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 3ef77cda..7f22d4fb 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('gtksourceview', 'c',
-          version: '5.1.0',
+          version: '5.1.1',
           license: 'LGPL-2.1-or-later',
     meson_version: '>= 0.53.0',
   default_options: [ 'c_std=gnu99',