Update random parameter in OrderManager initialization

The random parameter in OrderManager's initialization process under cooperative_cuisine/environment.py has been updated. Instead of using an existing random instance, a new one is now created using a specified seed. This allows for more controlled randomness within the system operation.

cooperative_cuisine/environment.py

@@ -216,7 +216,7 @@ class Environment:
         self.order_manager: OrderManager = OrderManager(
             order_config=self.environment_config["orders"],
             hook=self.hook,
-            random=self.random,
+            random=Random(seed),
         )
         """The manager for the orders and score update."""