Update default OpenAI models

action.yml

@@ -26,10 +26,10 @@ inputs:
     default: ${{ github.event.pull_request.head.ref }}
   generation_model:
     description: LLM to use for reno release note text generation
-    default: gpt-4-turbo-preview
+    default: gpt-4o
   function_calling_model:
     description: LLM to use for function calling (service parameter resolution, output formatting)
-    default: gpt-3.5-turbo-0613
+    default: gpt-3.5-turbo
   system_prompt:
     description: System message/prompt to help the model generate reno release note (prompt text or URL where prompt text can be found)
     default: https://bit.ly/reno_release_note_system_prompt_v4