Update app.py

Fixing what I think is a typo for tools param the documentation says [tools] but I get an error if I specify [tool1, too2]

app.py

@@ -51,7 +51,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer, get_current_time_in_timezone]
+    tools=[final_answer],[get_current_time_in_timezone]
     max_steps=6,
     verbosity_level=1,
     grammar=None,