Update app.py

Changed the model, again since apparently I exceeded my credit.

app.py

@@ -53,7 +53,7 @@ final_answer = FinalAnswerTool()
 model = HfApiModel(
 max_tokens=2096,
 temperature=0.5,
-model_id='Qwen/Qwen2.5-Omni-7B',# it is possible that this model may be overloaded
+model_id='rasbt/llama-3.2-from-scratch',# it is possible that this model may be overloaded
 custom_role_conversions=None,
 )