fix sftp errors

Author: Mesh-ach

pyproject.toml

@@ -26,7 +26,8 @@ dependencies = [
     "types-paramiko",
     "pandas",
     "collection",
-    "six"
+    "six",
+    "types-six"
 ]
 
 [project.urls]

src/worker/utilities.py

@@ -5,7 +5,7 @@
 from pydantic import BaseModel
 import os
 import stat
-from datetime import datetime, timedelta, timezone
+from datetime import datetime, timezone
 import io
 import logging
 from typing import List, Dict, Any, Optional, Union