switch out icon for shop=frame

as the previous icon (fas-vector-square) is not available in the v7 (non-pro) version of fontawesome anymore

Author: tyrasd

data/presets/shop/frame.json

@@ -1,5 +1,5 @@
 {
-    "icon": "fas-vector-square",
+    "icon": "temaki-portrait-framed",
     "geometry": [
         "point",
         "area"