fixing enum serialization for python 3.10

src/pydase/utils/serializer.py

@@ -1,5 +1,6 @@
 import inspect
 import logging
+import sys
 from collections.abc import Callable
 from enum import Enum
 from typing import Any
@@ -68,6 +69,8 @@ class Serializer:
         value = obj.name
         readonly = False
         doc = obj.__doc__
+        if sys.version_info < (3, 11) and doc == "An enumeration.":
+            doc = None
         if type(obj).__base__.__name__ == "ColouredEnum":
             obj_type = "ColouredEnum"
         else: