[gnome-sdk-images] Update to latest stable webkit

[Alexander Larsson <alexl src gnome org>]

commit 2e97186caa2538c67877bae8d6d8fc942595e7a7
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Nov 29 13:50:43 2016 +0100

    Update to latest stable webkit

 org.gnome.Sdk.json.in |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/org.gnome.Sdk.json.in b/org.gnome.Sdk.json.in
index 7f00dea..62c19af 100644
--- a/org.gnome.Sdk.json.in
+++ b/org.gnome.Sdk.json.in
@@ -703,8 +703,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://www.webkitgtk.org/releases/webkitgtk-2.13.92.tar.xz";,
-                    "sha256": "97db90daa1f7241eade79f91c0c94001a7ad4b17ebb0a1c5c0b7a8449dae94e0"
+                    "url": "https://www.webkitgtk.org/releases/webkitgtk-2.14.2.tar.xz";,
+                    "sha256": "2edbcbd5105046aea55af9671c4de8deedb5b0e3567c618034d440a760675556"
                 },
                 {
                     "type": "patch",