Update app.py

app.py

@@ -46,7 +46,7 @@ def query_gemini(message, history):
         
         # Generate response with conversation history
         response = client.models.generate_content(
-            model="gemini-2.5-flash",
+            model="gemini-flash-latest",
             contents=contents,
             config=types.GenerateContentConfig(
                 tools=[