[pre-commit.ci] auto fixes from pre-commit.com hooks

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nbclient/util.py

@@ -62,9 +62,9 @@ def just_run(coro: Awaitable) -> Any:
     return loop.run_until_complete(coro)
 
 
-
 T = TypeVar("T")
 
+
 def run_sync(coro: Callable[..., T]) -> Callable[..., T]:
     """Runs a coroutine and blocks until it has executed.