Reactivates a credit card.

def reactivate(credit_card_id: str) -> None:
    """
    Reactivates a credit card.
    """
    logger.info('reactivating-credit-card', credit_card_id=credit_card_id)
    with transaction.atomic():
        cc = CreditCard.objects.get(pk=credit_card_id)
        cc.reactivate()
        cc.save()