Update prompts.yaml

Add final_answer template

prompts.yaml

@@ -319,3 +319,14 @@
   "report": |-
     Here is the final answer from your managed agent '{{name}}':
     {{final_answer}}
+    
+  "final_answer": |-
+    You have successfully solved the task! Now you need to provide your final answer using the `final_answer` tool.
+    
+    Your answer should be clear and complete, containing all the information requested in the original task.
+    
+    Remember to use the exact format:
+    Code:
+    ```py
+    final_answer(your_answer_here)
+    ```<end_code>