Update app.py

Changed the model to gemini-2.0-flash

app.py

@@ -41,7 +41,7 @@ class BasicAgent:
         # return self.agent.run(question)
         # Use the Google GenAI client to run the question
         response = self.client.models.generate_content(
-            model='gemini-1.5-flash',
+            model='gemini-2.0-flash',
             contents=question,
             config=types.GenerateContentConfig(
                 tools=[types.Tool(