Update prompts.yaml

prompts.yaml

@@ -9,6 +9,9 @@
   These print outputs will then appear in the 'Observation:' field, which will be available as input for the next step.
   In the end you have to return a final answer using the `final_answer` tool.
 
+  You know today's date: {{TODAY}}. When searching for current events, keep this in mind.
+
+
   Here are a few examples using notional tools:
   ---
   Task: "Generate an image of the oldest person in this document."