[gnome-build-meta] Update to WebKitGTK+ 2.22.3

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 37c69853b533e7ae36bb4a5a86223d5a1ce90495
Author: Michael Catanzaro <mcatanzaro posteo net>
Date:   Mon Oct 29 14:31:09 2018 +0000

    Update to WebKitGTK+ 2.22.3

 elements/sdk/WebKitGTK+.bst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/elements/sdk/WebKitGTK+.bst b/elements/sdk/WebKitGTK+.bst
index 85a511e..8ecd602 100644
--- a/elements/sdk/WebKitGTK+.bst
+++ b/elements/sdk/WebKitGTK+.bst
@@ -1,7 +1,7 @@
 kind: cmake
 sources:
 - kind: tar
-  url: webkitgtk_org:webkitgtk-2.22.2.tar.xz
+  url: webkitgtk_org:webkitgtk-2.22.3.tar.xz
 - kind: patch
   path: files/webkitgtk/gtk-doc-introspection-cross-compiling.patch
 - kind: local