SIENTIAPDE-1579: Lint fixes and formatting

model_manager/activities/experiment_tracking.py

@@ -6,6 +6,8 @@ in the PostgreSQL database, extending the base Postgres activity with specialize
 methods for experiment management.
 """
 
+import enum
+
 from temporalio import activity, workflow
 
 with workflow.unsafe.imports_passed_through():
@@ -13,7 +15,6 @@ with workflow.unsafe.imports_passed_through():
     import traceback
     from collections.abc import Mapping
     from datetime import UTC, datetime
-    from enum import Enum
     from typing import Any
 
     from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
@@ -24,7 +25,7 @@ with workflow.unsafe.imports_passed_through():
     from sqlalchemy import text
 
 
-class UpdateType(str, Enum):
+class UpdateType(enum.StrEnum):
     """Types of experiment run updates."""
 
     STATUS = 'status'