Update album.py (#732)

Correct handling of subfolders in config variable "folder_format"

e.g.:
[filepaths]
folder_format = "{albumartist}/{title} ({year})"

old method didn't allow creating subfolders by stripping "\" or "/"

streamrip/metadata/album.py

@@ -5,7 +5,7 @@
 from dataclasses import dataclass
 from typing import Optional
 
-from ..filepath_utils import clean_filename
+from ..filepath_utils import clean_filename, clean_filepath
 from .covers import Covers
 from .util import get_quality_id, safe_get, typed
 
@@ -78,7 +78,7 @@ def format_folder_path(self, formatter: str) -> str:
             "container": self.info.container,
         }
 
-        return clean_filename(formatter.format(**info))
+        return clean_filepath(formatter.format(**info))
 
     @classmethod
     def from_qobuz(cls, resp: dict) -> AlbumMetadata: