fix(icons): add another missing comma

custom_components/tuya_local/icons.json

@@ -86,7 +86,7 @@
                             "left": "mdi:arrow-bottom-left",
                             "middle": "mdi:arrow-down",
                             "right": "mdi:arrow-bottom-right",
-                            "rightmost": "mdi:arrow-right"
+                            "rightmost": "mdi:arrow-right",
                             "left_half": "mdi:arrow-expand-left",
                             "right_half": "mdi:arrow-expand-right",
                             "surround": "mdi:sync"