[vala/0.48] webkit2gtk-4.0: Update to 2.29.3

[Rico Tzschichholz <ricotz src gnome org>]

commit 812af6c5d277a62c3c992b543b8382448cfd05e1
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Jul 12 13:34:12 2020 +0200

    webkit2gtk-4.0: Update to 2.29.3

 vapi/webkit2gtk-4.0.vapi | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/vapi/webkit2gtk-4.0.vapi b/vapi/webkit2gtk-4.0.vapi
index d2f876ded..997a9b574 100644
--- a/vapi/webkit2gtk-4.0.vapi
+++ b/vapi/webkit2gtk-4.0.vapi
@@ -41,6 +41,8 @@ namespace WebKit {
                public unowned string get_realm ();
                [Version (since = "2.2")]
                public WebKit.AuthenticationScheme get_scheme ();
+               [Version (since = "2.30")]
+               public WebKit.SecurityOrigin get_security_origin ();
                [Version (since = "2.2")]
                public bool is_for_proxy ();
                [Version (since = "2.2")]