Check if the opcache is defined instead of assuming the latest version

[DionisioFG]

Checking debian bullseye and ce-deploy, I found that the opcache version installed with provision is the latest one.
But ce-dev uses by default PHP 7.4. This is a problem because the latest version of opcache needs PHP >= 8.1

The issues is here:

https://github.com/codeenigma/ce-provision/blob/1.x/roles/opcache/tasks/main.yml#L13

To fix this we need to verify if a opcache version is defined in the provision.yml file, and if not then use the latest