ServeHappy: Bump minimum WordPress supported PHP to 7.4

[johnbillion]

Ref: https://make.wordpress.org/core/2026/01/09/dropping-support-for-php-7-2-and-7-3/

Previously: https://meta.trac.wordpress.org/changeset/13936

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Core Committers: Use this line as a base for the props when committing in SVN:

Props johnbillion.

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

[Copilot]

Pull request overview

Updates the Serve Happy configuration to reflect WordPress core’s dropped support for PHP 7.2 and 7.3 by raising the minimum supported PHP version used across wordpress.org and the Serve Happy API responses.

Changes:

• Bumped the MINIMUM_PHP constant from 7.2.24 to 7.4.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.