refactor(autorenewal): clean up imports and simplify error handling

repositories/subscriptions.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timezone
+from datetime import UTC, datetime, timedelta
 
 from sqlalchemy import select, update
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -10,13 +10,12 @@ class SubscriptionRepository:
     async def get_subscriptions_for_autorenewal(
         self, session: AsyncSession, *, days_before_expiry: int = 1
     ) -> list[Subscription]:
-        from datetime import timedelta
 
-        threshold = datetime.now(timezone.utc) + timedelta(days=days_before_expiry)
+        threshold = datetime.now(UTC) + timedelta(days=days_before_expiry)
         stmt = (
             select(Subscription)
             .where(
-                Subscription.autorenew == True,
+                Subscription.autorenew == True,  # noqa: E712
                 Subscription.status == SubscriptionStatus.ACTIVE,
                 Subscription.end_date <= threshold,
             )