Update app.py

Make tools available for agent to use

app.py

@@ -56,9 +56,9 @@ with open("prompts.yaml", 'r') as stream:
 agent = CodeAgent(
     model=model,
     tools=[
-        DuckDuckGoSearchTool, 
-        get_current_time_in_timezone, 
-        image_generation_tool, 
+        DuckDuckGoSearchTool(), 
+        get_current_time_in_timezone(), 
+        image_generation_tool(), 
         final_answer], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,