Problems validating the month

[josuedor]

$this->validate($request, [
            'credit_card_expiration_date' => ['required', new CardExpirationDate('Y-m')]
        ]);

When insert 2020/13, 2020/14 ..., until 2020/99 passes the validation.

• This is incorrect because the year is only 12 months.
• Validation fails only when there are three digits in the month.

Regards.