Add FTP to composer.json

[rafaelstz]

Description (*)

PHP 8.2.15 removed the FTP extension, so I created this PR to add it as part of the dependencies.

Related Pull Requests

1. https://github.com/magento/magento-cloud-docker/pull/367

Fixed Issues (if relevant)

1. Fixes magento/magento2#39083

Manual testing scenarios (*)

1. Try to use CSV import via FTP on PHP 8.2.15 or greater

Contribution checklist (*)

• [x] Pull request has a meaningful description of its purpose
• [x] All commits are accompanied by meaningful commit messages
• [ ] All new or changed code is covered with unit/integration tests (if applicable)
• [ ] README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• [ ] All automated tests passed successfully (all builds are green)