Replace an expiry's reminder schedule

curl -X POST 'https://api.expiryedge.com/v1/updateExpiryReminders' \
  -H "Authorization: Bearer $EXPIRYEDGE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "expiry_id": "exp_4Tq9sLm2",
  "expiry_date": "2026-10-15",
  "org_timezone": "America/Chicago",
  "reminders": [
    {
      "firestore_id": "rem_5Jd8wQ",
      "amount": 14,
      "time_unit": "day",
      "period": "before",
      "time": "08:30",
      "email": true,
      "sms": false,
      "whatsapp": false
    }
  ]
}'

{
  "message": "Expiry reminders updated successfully",
  "updated": 1,
  "created": 0,
  "deleted": 0,
  "reminders": [
    {
      "id": "rem_5Jd8wQ",
      "amount": 14,
      "time_unit": "day",
      "period": "before",
      "time": "08:30",
      "timezone": "America/Chicago",
      "scheduled_at": "2026-10-01T13:30:00.000Z",
      "status": "pending",
      "email_enabled": true,
      "sms_enabled": false,
      "whatsapp_enabled": false
    }
  ]
}