add cancel schedule

orders-events/app/events/billing/cancel_enrollment.py

@@ -32,17 +32,17 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
     )
 
     created_at: datetime = fromisoformat(new_image['created_at'])  # type: ignore
-    start_date, end_date = get_billing_period(
+    start_period, end_period = get_billing_period(
         billing_day=int(subscription['billing_day']),
         date_=created_at,
     )
     pk = 'BILLING#ORG#{org_id}'.format(org_id=subscription['org_id'])
     sk = 'START#{start}#END#{end}'.format(
-        start=start_date.isoformat(),
-        end=end_date.isoformat(),
+        start=start_period.isoformat(),
+        end=end_period.isoformat(),
     )
 
-    if now_.date() > end_date:
+    if now_.date() > end_period:
         logger.debug('Enrollment outside the billing period')
         return False