add token back to config

Author: michaelaguiar

config/laravel-echo-api-gateway.php

@@ -4,6 +4,7 @@
     "connection" => [
         "key" => env("AWS_ACCESS_KEY_ID"),
         "secret" => env("AWS_SECRET_ACCESS_KEY"),
+        "token" => env("AWS_SESSION_TOKEN"),
         "region" => env("AWS_DEFAULT_REGION", "us-east-1"),
     ],