Update an eog needle for flatpak dialog change

Again, a dialog changed a bit in the flatpak version of the app.
For this needle, the shade of grey is slightly different. Change
happened between Fedora-36-20220314.n.0 and 20220315.n.0.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/gnome/apps/eog/eog_wallpaper_set_window-flatpak-20220315.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "xpos": 456,
+      "ypos": 264,
+      "width": 111,
+      "height": 20,
+      "type": "match"
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "eog_wallpaper_set_window"
+  ]
+}