[CI][RFC] Replace black-jupyter with ruff-format (#37210)

Co-authored-by: Alison Shao <a.shao@wustl.edu>

benchmark/hicache/bench_serving.py

@@ -75,9 +75,9 @@ async def async_request_openai_completions(
     pbar: Optional[tqdm] = None,
 ) -> RequestFuncOutput:
     api_url = request_func_input.api_url
-    assert api_url.endswith(
-        "completions"
-    ), "OpenAI Completions API URL must end with 'completions'."
+    assert api_url.endswith("completions"), (
+        "OpenAI Completions API URL must end with 'completions'."
+    )
 
     async with aiohttp.ClientSession(timeout=AIOHTTP_TIMEOUT) as session:
         payload = {