update KDE update icon for color change

May be other needles in the same tray that need changing, but
the test fails at the next step I think because of #1412750, so
can't be sure.

needles/kde/desktop_package_tool_update-kde-20170125.json

@@ -0,0 +1,16 @@
+{
+  "area": [
+    {
+      "ypos": 544,
+      "type": "match",
+      "xpos": 618,
+      "width": 20,
+      "height": 18
+    }
+  ],
+  "tags": [
+    "desktop_package_tool_update",
+    "DESKTOP-gnome"
+  ],
+  "properties": []
+}