elasticsearch user agent regex update (#9831) (#9832)

tests/vector_stores/test_elasticsearch.py

@@ -464,7 +464,7 @@ def test_check_user_agent(
     user_agent = es_client_instance.transport.requests[0]["headers"][  # type: ignore
         "user-agent"
     ]
-    pattern = r"^llama_index-py-vs/\d+\.\d+\.\d+$"
+    pattern = r"^llama_index-py-vs/\d+\.\d+\.\d+(\.post\d+)?$"
     match = re.match(pattern, user_agent)
 
     assert (