I have a plugin that previously supported PHP 5.6. The new upcoming version supports 7.4 and higher.
Does WordPress automatic update take that into account when automatically updating plugins? Or will it just update and break the website that is on PHP version lower than 7.4.
Tried googling it but can not find an answer anywhere.
From personal experience, Wordpress does not really care. Depending on the plugin, it might be deactivated or just run and break your site. It might still work, but it might be a safe bet to disable the auto update and verify yourself if the plugin is compatible. You can create your own local testing environment with for example, local flywheel.
