Update model to Llama-3.1-8B-Instruct

Update model to meta-llama/Llama-3.1-8B-Instruct

app.py

@@ -39,7 +39,7 @@ def get_current_time_in_timezone(timezone: str) -> str:
 model = HfApiModel(
     max_tokens=2096,
     temperature=0.5,
-    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',
+    model_id='meta-llama/Llama-3.1-8B-Instruct',
     custom_role_conversions=None,
 )