Upgrades PHP generator version

[fcarrero]

Updates the PHP generator to the latest version.

Includes an exclude card networks field in the checkout.

Fixes an issue where the expiration date was incorrect.

[gemini-code-assist]

Summary of Changes

Hello @fcarrero, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request primarily focuses on updating the underlying PHP generator to a newer version, which in turn facilitates the introduction of new features and bug fixes. Key changes include adding functionality to exclude specific card networks from checkout options and correcting the validation logic for checkout link expiration dates. These updates aim to improve the flexibility of payment configurations and enhance the reliability of checkout processes.

Highlights

• PHP Generator Upgrade: The PHP generator has been updated from version 7.9.0 to 7.12.0, bringing the codebase in line with the latest generation standards and potentially introducing new features or stability improvements from the OpenAPI Generator project.
• New Checkout Feature: A new exclude_card_networks field has been added to the checkout functionality, allowing users to specify card networks to be excluded from payment options during the checkout process. This enhances flexibility and control over payment methods.
• Expiration Date Logic Fix: An issue where the expiration date for checkout links was incorrectly validated has been resolved. The valid range for expires_at is now correctly set from 10 minutes to 365 days from the creation date, addressing a previous bug that limited the range to 2 to 365 days from the next day.
• Package Version Bump: The overall package version has been incremented from 7.0.7 to 7.0.8, reflecting the updates and new features introduced in this pull request.
• Internal Codebase Improvements: Several internal improvements have been made, including the addition of a FormDataProcessor for handling form data, and updates to type hints in model constructors for better type safety and code quality.

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[gemini-code-assist]

Code Review

This pull request successfully upgrades the PHP generator version, which is reflected consistently across most of the project files. The introduction of the exclude_card_networks field in the checkout process and the fix for the expiration date are valuable additions. The code modernization, such as using nullable types in constructors, is also a welcome improvement. However, I've identified a critical compatibility issue in the newly added lib/FormDataProcessor.php file that needs to be addressed, as it could break the application in environments running older PHP versions. There's also a minor inconsistency in the generator version noted in the same file.