Switch from dataclass-wizard to mashumaro

[wagoodman]

This fixes the issues we're seeing with dataclass-wizard by swapping it out with mashumaro. This additionally swaps the CI validations to a matrix to test multiple versions of python. This was done by adding tox back into the project. Nothing has changed from the make unit workflow, however if you want to test with all supported versions of python (and you have already installed them locally) then you can run make unit-matrix. CI runs with this matrix configuration in mind.

Note: this updates the default python version in CI to python 3.11. This depends on the defaults in the bootstrap action locally in this repo. SInce this is not a single source of truth, we're at risk of drift here (relative to the python versions in the test matrix).

TODO:

• ensure CI is passing, and each python version in each job is correct (in the matrix run)
• passing quality gate: ensure all providers are tested

[westonsteimel]

Hmm, something is off with the unit tests. They're all running on python 3.10
https://github.com/anchore/vunnel/actions/runs/6801136283/job/18491300263?pr=389#step:4:15

[westonsteimel]

Ah, looks like something weird happening in the poetry install: https://github.com/anchore/vunnel/actions/runs/6801136283/job/18491300544?pr=389#step:3:103

[westonsteimel]

installing it in python3.10

[westonsteimel]

Hmm, I'm not really sure why it is only installing poetry in python3.10. I tried bumping to a newer poetry version but that did nothing

[wagoodman]

I've removed the tox-gh-actions tool that I was trying to use to facilitate the matrix seamlessly. The trade off is adding some seams: the makefile is not the entrypoint anymore for running tox.

[zhill]

I suggest looking at the tox allowlist section. it's using poetry from the initial install I think rather than from the tox matrix.