fix black issues

rembg/sessions/base.py

@@ -13,7 +13,7 @@ class BaseSession:
     def __init__(self, model_name: str, sess_opts: ort.SessionOptions, *args, **kwargs):
         """Initialize an instance of the BaseSession class."""
         self.model_name = model_name
-        
+
         if "providers" in kwargs and isinstance(kwargs["providers"], list):
             providers = kwargs.pop("providers")
         else: