Update Ubuntu CI

[jaagut]

Proposed changes

Updates and extends the CI:

• Runs on latest ubuntu
• Tests various python versions
• Uses dependency caching

Related issues

Necessary checks

• Update poetry package version semantically
• Write documentation
• Create issues for future work
• Test on your machine

[jaagut]

TODOs:

• pip upgrade seems to not upgrade to the latest version (maybe dependent on python version matrix?)
• Investigate caching
• Activate test training and inferencing

[jaagut]

Where do we store config files for the CI? Do we create a working /config/custom.data or do we create a separate config in /.github/workflows/ ?

[Flova]

For pytorchyolo we have a data config in the config folder. This points to a dummy custom dataset with one image as well as a label in the data folder. I would use this as the reference. We can maybe take the image from torso.

[Flova]

Otherwise nice PR

[jaagut]

Other ideas:

• Test for determinism (training produces the same output?)
• Test conversion scripts

[jaagut]

Superseded by #94