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

for more information, see https://pre-commit.ci

jupyter_core/utils/__init__.py

@@ -171,7 +171,7 @@ async def ensure_async(obj: Union[Awaitable, Any]) -> Any:
         try:
             result = await obj
         except RuntimeError as e:
-            if str(e) == 'cannot reuse already awaited coroutine':
+            if str(e) == "cannot reuse already awaited coroutine":
                 # obj is already the coroutine's result
                 return obj
             raise