Returned broker startup.

Signed-off-by: Pavel Kirilin <[email protected]>

Author: s3rius

taskiq/scheduler/scheduler.py

@@ -55,3 +55,4 @@ async def startup(self) -> None:  # pragma: no cover
         Here you can do stuff, like creating
         connections or anything you'd like.
         """
+        await self.broker.startup()