[gnome-sdk-images] WebKitGTK+ 2.21.2

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 9dc259e65f519d997ab59c26bea5d5199aff0339
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Mon May 21 07:34:50 2018 -0500

    WebKitGTK+ 2.21.2

 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 91ab979..ab89f1f 100644
--- a/org.gnome.Sdk.json.in
+++ b/org.gnome.Sdk.json.in
@@ -877,8 +877,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://webkitgtk.org/releases/webkitgtk-2.21.1.tar.xz";,
-                    "sha256": "988e29a78a094968bbec1ccffc8bea00af4048893c0db966046ad431b402ad50"
+                    "url": "https://webkitgtk.org/releases/webkitgtk-2.21.2.tar.xz";,
+                    "sha256": "39eebeccc1d4de94a6750997ef52068308e31dc1de29a4537651df07d8067c9c"
                 }
             ]
         },