Docker image laradock/workspace:latest-8.0 has php 8.1.2 instead of 8.0.x

The version for php 8.0 has 8.1 - which breaks many many things.
```
docker run -it --rm laradock/workspace:latest-8.0 bash
root@765eba62c5dc:/# php -v
PHP 8.1.2 (cli) (built: Jan 24 2022 10:42:33) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.1.2, Copyright (c) Zend Technologies
    with Zend OPcache v8.1.2, Copyright (c), by Zend Technologies
root@765eba62c5dc:/# exit
```