Try to replace conda/setup-python with astral-uv if faster #3350
Description
Let's try to use https://docs.astral.sh/uv instead of conda in this CI job:
- https://github.com/pytorch/ignite/blob/41d75522eb36d4b9c55afea941ec53f42430315e/.github/workflows/pytorch-version-tests.yml
- https://github.com/pytorch/ignite/blob/41d75522eb36d4b9c55afea941ec53f42430315e/.github/workflows/unit-tests.yml
We can use GHA: actions/setup-uv
- Each task should be a separate PR!
- Please also provide in the description of the PR the total CI time in the PR vs same CI job time on master.
- To start CI jobs on the fork, please check your forks GHA settings
Context:
- https://hugovk.dev/blog/2024/speed-up-ci-with-uv/ (we do not want to use tox however).