Use StrEnum added in python 3.11

validate.py

@@ -21,7 +21,7 @@
 import logging
 import os
 from collections.abc import Callable
-from enum import Enum
+from enum import StrEnum
 from importlib import import_module
 from typing import Any, LiteralString
 
@@ -31,7 +31,7 @@
 _logger = logging.getLogger(__name__)
 
 
-class Validation(str, Enum):
+class Validation(StrEnum):
     """Type of validation"""
 
     SKIP = "skip"