#159 Update dependencies

[michaelw85]

Resolves #159 Update Symfony dependencies to v7. Update PHP Unit to V11

Note: To be able to install in a project with symfony/finder v7 as a dep you need to update yosymfony/resource-watcher. Unfortunately, this package has not been updated for 4 years even though a PR already exists for some of these updates. I've created my own fork to overcome this issue. To use the fork add the repo entry to your composer.json, this will allow you to install the updated version 3.1.0

"repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/michaelw85/resource-watcher"
        },
]