migrate from deprecated distutils on Python 3.10

[ScottA38]

Hey Maastif,

I have been using your script for a while, and I recently found that on python-3.10 and later, the entire distutils library is removed, so the script fails

I migrated all the pre-validation checks to GitPython instead, because I thought this was more robust than parsing from stdout on the terminal. When I started trying to migrate the actual program business logic to GitPython, however, I realised that you probably used these standard libraries intentionally, in order to ensure that it is as cross-compatible as possible

Is requiring ‘GitPython’ acceptable? If so I will try and adapt the rest of the logic to use gitpython over subprocess. If not, then maybe you have some guidance for me about how to use a python standard library instead