lang: [sk] update Slovak translations for invalid email and token

[jozefrebjak]

Description

This PR completes the Slovak translation for the Auth.php language file by translating two remaining English strings:

1. 'invalidEmail' - Translated from "Unable to verify the email address "{0}" matches the email on record." to "Nie je možné overiť, či sa e-mailová adresa "{0}" zhoduje s e-mailom v databáze."
2. 'token' - Translated from "Token" to "Token" (keeping the same as it's a technical term commonly used in Slovak)

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[datamweb]

2. 'token' - Translated from "Token" to "Token" (keeping the same as it's a technical term commonly used in Slovak)

So, please update the test as follows.

final class SlovakTranslationTest extends AbstractTranslationTestCase
{
    protected array $excludedLocaleKeyTranslations = [
        'Auth.token',
    ];
}

[jozefrebjak]

@datamweb thanks, done

[datamweb]

This test failure is not related to this PR.
@jozefrebjak Thanks!