Changed deprecated logger.warn to logger.warning (#237)

Author: DeanNeaht

taskiq/cli/worker/process_manager.py

@@ -135,7 +135,7 @@ def _signal_handler(signum: int, _frame: Any) -> None:
 
         logger.debug(f"Got signal {signum}.")
         action_queue.put(ShutdownAction())
-        logger.warn("Workers are scheduled for shutdown.")
+        logger.warning("Workers are scheduled for shutdown.")
 
     return _signal_handler