Release v1.12.55 (#6476)

This release will include a hotfix for kiosk for two things.

1. User-added games can now have high scores.
2. The kiosk's game url will now also use the config run url and will be a relative path, making it so wherever the kiosk is running, that target is what will be used (ex: /stable---run rather than always using /---run on live).

docs/index-ref.json

@@ -1,3 +1,3 @@
 {
-    "appref": "v1.12.53"
+    "appref": "v1.12.55"
 }