cc_type is not set for adyen_cc payments

[DanieliMi]

Describe the bug
When paying with a credit card the used card type is not saved in sales_order_payment.cc_type. This used to work in v8.

To Reproduce
Steps to reproduce the behavior:

1. Put a product into your cart
2. Go to checkout
3. Pay with a credit card such as VISA
4. Credit card type is not stored

Expected behavior
The card type is saved (VI for VISA).

Magento version
2.4.6-p8

Plugin version
9.12.2

Additional context
It seems the API endpoint might have changed.

adyen-magento2/Gateway/Validator/CheckoutResponseValidator.php

Line 136 in fa5a996

if (!empty($response['additionalData']['paymentMethod'])) {

is looking for $response['additionalData']['paymentMethod'] but when I debug the response from the test instance is:

array (
  'amount' => 
  array (
    'currency' => 'EUR',
    'value' => 2685,
  ),
  'merchantReference' => '123456',
  'paymentMethod' => 
  array (
    'brand' => 'visa',
    'type' => 'scheme',
  ),
  'pspReference' => 'ABC123',
  'resultCode' => 'Authorised',
)

[DanieliMi]

Changing the code to

                if (!empty($response['paymentMethod']['brand'])) {
                    $ccType = $this->adyenHelper->getMagentoCreditCartType(
                        $response['paymentMethod']['brand']
                    );
                    $payment->setAdditionalInformation('cc_type', $ccType);
                    $payment->setCcType($ccType);
                }

did in fact set the cc_type again as it used to.

[DanieliMi]

Interestingly I just compared with v8 and the code is the same. I also verified with the API explorer... it should work. So why do we get a different response?
In case it helps, those are the logs:

AdyenLoggerTest.INFO: Request to Adyen API /payments

{
    "apiVersion": "v71",
    "body": {
        "merchantAccount": "someAccount",
        "shopperReference": "XXXX-XXXX-XXXX-XXXX-XXXX",
        "shopperEmail": "[email protected]",
        "telephoneNumber": "+49123456789",
        "shopperName": {
            "firstName": "Dev",
            "lastName": "Test"
        },
        "countryCode": "DE",
        "shopperLocale": "de_DE",
        "shopperIP": "127.0.0.1",
        "billingAddress": {
            "street": "Some Street",
            "postalCode": "12345",
            "city": "Some City",
            "houseNumberOrName": "1",
            "country": "DE",
            "stateOrProvince": "HES"
        },
        "deliveryAddress": {
            "street": "Some Street",
            "postalCode": "12345",
            "city": "Some City",
            "houseNumberOrName": "1",
            "country": "DE",
            "stateOrProvince": "HES"
        },
        "amount": {
            "currency": "EUR",
            "value": 9685
        },
        "reference": "123456789",
        "fraudOffset": "0",
        "browserInfo": {
            "userAgent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36",
            "acceptHeader": "*/*",
            "colorDepth": 24,
            "language": "en-US",
            "javaEnabled": false,
            "screenHeight": 1080,
            "screenWidth": 1920,
            "timeZoneOffset": -60
        },
        "shopperInteraction": "Ecommerce",
        "paymentMethod": {
            "type": "scheme",
            "holderName": "Someone",
            "encryptedCardNumber": "XXXY",
            "encryptedExpiryMonth": "XXX",
            "encryptedExpiryYear": "XXX",
            "encryptedSecurityCode": "XXX",
            "brand": "visa",
            "checkoutAttemptId": "XXX"
        },
        "riskData": {
            "clientData": "XXX"
        },
        "additionalData": {
            "allow3DS2": true
        },
        "returnUrl": "https://example.com/adyen/return?merchantReference=123456789",
        "channel": "web",
        "origin": "https://example.com/",
        "applicationInfo": {
            "Adyen\\Model\\Checkout\\ApplicationInfo": {
                "adyenLibrary": {
                    "name": "adyen-php-api-library",
                    "version": "20.4.0"
                },
                "externalPlatform": {
                    "name": "Magento",
                    "version": "2.4.6-p8",
                    "integrator": "Adyen"
                },
                "merchantApplication": {
                    "name": "adyen-magento2",
                    "version": "9.12.2"
                }
            }
        }
    }
}

AdyenLoggerTest.INFO: Response from Adyen API

{
    "body": {
        "amount": {
            "currency": "EUR",
            "value": 9685
        },
        "merchantReference": "123456789",
        "paymentMethod": {
            "brand": "visa",
            "type": "scheme"
        },
        "pspReference": "V2XXX",
        "resultCode": "Authorised"
    }
}