chore: fix all ruff lint errors + format — 0 errors, 306 tests pass

app/models/notification.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import uuid
 from datetime import datetime
 
-from sqlalchemy import String, DateTime, ForeignKey, Text, func, Index
+from sqlalchemy import DateTime, ForeignKey, Index, String, Text, func
 from sqlalchemy.dialects.postgresql import UUID as PGUUID
 from sqlalchemy.orm import Mapped, mapped_column