[gnome-sdk-images/gnome-3-28] Update to WebKitGTK+ 2.22.0

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 6bb380dacec238fe3e2ad11b37807da6e8708605
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue Sep 4 14:43:29 2018 -0500

    Update to WebKitGTK+ 2.22.0

 org.gnome.Sdk.json.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/org.gnome.Sdk.json.in b/org.gnome.Sdk.json.in
index dd77332..9967c54 100644
--- a/org.gnome.Sdk.json.in
+++ b/org.gnome.Sdk.json.in
@@ -728,8 +728,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://webkitgtk.org/releases/webkitgtk-2.20.5.tar.xz";,
-                    "sha256": "15c0f8d26e9605afe0948d161ba5fd82efee8eda2debd409fd40a440ac3af990"
+                    "url": "https://webkitgtk.org/releases/webkitgtk-2.22.0.tar.xz";,
+                    "sha256": "fa42b54a98831405c8a3e7f40371eec3f0bd5cdbb124813a5e329e7a9f8c6f2a"
                 }
             ]
         },