add(gha): test Python versions and update docs

[k-dovgan]

No description provided.

[github-actions]

Test Results

713 tests  ±0   709 ✅ ±0   22m 17s ⏱️ + 1m 36s
  1 suites ±0     4 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit 05a0159. ± Comparison against base commit a26db3b.

♻️ This comment has been updated with latest results.

[github-actions]

Here is the summarized build result:
5. Executing build steps
5.1. [ 1/8 ] Create virtual environment - Success
5.2. [ 2/8 ] Update Docker images - Success
5.3. [ 3/8 ] Install Universum for tests - Success
5.4. [ 4/8 ] Make - Success
5.5. Collecting artifacts for the 'Make' step - Success
5.6. [ 5/8 ] Make tests - Success
5.7. Collecting artifacts for the 'Make tests' step - Success
5.8. [ 6/8 ] Collect test results - Success
5.9. Collecting artifacts for the 'Collect test results' step - Success
5.10. [ 7/8 ] Run static pylint - Success
5.11. [ 8/8 ] Run static type checker - Failed

Here is the link to Github Actions build: https://github.com/Samsung/Universum/actions/runs/25886892463

[k-dovgan]

Workflow example: https://github.com/Samsung/Universum/actions/runs/25885374074

[i-keliukh]

I see the workflow failed on "Setup Python" step for 3.6 and 3.7 and on making docker images for 3.8 and 3.9. The updated doc says that tests require Python >= 3.12. So it is not clear what is the reason of having 3.6-3.11 tested.
Another issue - the nox_only decorator is not updated. I think we should either change it or remove corresponding tests.

[k-dovgan]

I see the workflow failed on "Setup Python" step for 3.6 and 3.7 and on making docker images for 3.8 and 3.9. The updated doc says that tests require Python >= 3.12. So it is not clear what is the reason of having 3.6-3.11 tested.

I think I might add some kind of switch in tests between "under 3.12 - higher" in a different PR. I'd leave it as is now for active Python versions (3.10 and higher), as this WF is more illustrative, than "required": you can see I only left "workflow_dispatch" trigger, so it only can be run manually.

Another issue - the nox_only decorator is not updated. I think we should either change it or remove corresponding tests.

Same here: the decorator is not actually connected to nox, it's about regression. It is now used correctly, and it needs to be renamed — but as I see the tests need to be fixed in several places for Python other than 3.12, I'd leave it to the next PR.

[i-keliukh]

This WF is more illustrative, than "required": you can see I only left "workflow_dispatch" trigger, so it only can be run manually.

No problem. Please describe the purpose of the workflow in the PR description.