fix!: update version requirements to what's actually needed by code

[justlevine]

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What does this implement/fix? Explain your changes.

This PR updates the plugin headers with the versions of PHP, WordPress, and WooCommerce that this plugin actually supports. It additionally locks the stubs to those correct versions to prevent future breaking changes from leaking into the codebase accidentally.

(PHPstan was also updated to the latest version)

Note: This is marked as a breaking change, but technically this PR isnt actually causing any breaking behavior.

Update trace

• WPGraphQL 1.14.0 (defined req) requires PHP 7.1 and WordPress 5.0. (superseded below)
• Multiple place in the codebase use trailing commas in methods, which were only allowed since PHP 7.3. This however is easy enough to fix.
• OrderUtil was only added in WC 7.0, and several codebase functions (e.g. model->dateCompleted), rely on on WooCommerce 7.5.0.
  • 👉WooCommerce 7.5.0 requires PHP 7.2 and WordPress 5.9.

Does this close any currently open issues?

Just local fatal errors when trying to upgrade on some old sites.

Any relevant logs, error output, GraphiQL screenshots, etc?

(If it’s long, please paste to https://ghostbin.com/ and insert the link here.)

Any other comments?

I'm sure work could be done to make the currently-breaking code backwards compatible, but since a) these breaks have been in the plugin for a while, and b) woocommerce itself has an L+2 support policy, I don't believe it's worth the effort.

Where has this been tested?

• WooGraphQL Version: 0.14.1 ✅
• WPGraphQL Version: 1.13.10❌, 1.14.0 ✅, 1.14.6 ✅
• WordPress Version: 5.8.2 ❌ (WooCommerce wont activate), 5.9.7 ✅, 6.2.2 ✅
• WooCommerce Version: 7.2.3 ❌ , 7.5 ✅, 7.8.2 ✅

[kidunot89]

Looks good, bro 👍🏿