🔧 Bump requirements to PHP 8.0

[retlehs]

https://www.php.net/supported-versions.php
https://endoflife.date/php

I'd prefer to bump this to PHP 8.1, considering active support for PHP 8.0 ended on 2022-11-26, but WordPress & WP-CLI still don't fully support it at this time

Ref https://roots.io/wordpress-php-8-1-support-not-found/
Ref https://core.trac.wordpress.org/ticket/54504 (coming in WordPress 6.2)
Ref wp-cli/wp-cli#5623

[drzraf]

I believe it's an error.
Those relying on PHP 7.x (and whatever the reasons are, it's their problem) should be given the choice. If a dependency actually needs 8.x, it's fine but please don't arbitrarily increase the version number. WP still supports a broad range of PHP versions (including 7.x) and that's fine.

[retlehs]

It’s actually not fine that WordPress supports versions of PHP that aren’t actively supported.

Bedrock is just a boilerplate. Feel free to change the value to whatever you’d like for your own projects — no one is forcing you to use a certain version of PHP. We’ll be bumping this to PHP 8.1 now that WordPress 6.2 is out.