fix: allow 13-digit Visa numbers in credit card validator

[yslpn]

PR: Accept 13-digit Visa Numbers

Summary

• Resolves valibot#1327 by allowing legacy 13-digit Visa PANs to pass validation.
• Aligns the shared credit card regex with the issuer length guidance described in Payment card number — Issuer identification number (IIN).

Implementation

• Update CREDIT_CARD_REGEX to accept 13-19 consecutive digits while keeping grouped formats intact, so 13-digit Visa numbers reach provider-specific checks.
• Retain downstream provider matching and Luhn verification, ensuring no regressions for other brands.

Testing

• Existing unit test creditCard.test.ts already covers the 13-digit Visa sample 4007000000027;

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[Copilot]

Pull Request Overview

This PR extends credit card validation to support 13-digit credit card numbers, specifically for Visa cards which can have 13 or 16-19 digits according to the payment card standard.

Key Changes:

• Updated the credit card regex to accept 13-19 digit numbers (previously 14-19)
• Added test coverage for a 13-digit Visa card number

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
library/src/actions/creditCard/creditCard.ts	Modified the CREDIT_CARD_REGEX to support 13-digit card numbers by changing the minimum length from 14 to 13
library/src/actions/creditCard/creditCard.test.ts	Added test case for a 13-digit Visa card number ('4007000000027') to verify the new validation range

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