Use uv managed python in GHA workflows

[eifinger]

Purpose

Less overhead makes this easier to maintain and enables using hardlinking on Windows runners

The hardlinking warning can be seen here.
https://github.com/Azure-Samples/azure-search-openai-demo/actions/runs/13211586770/job/36885643258

Does this introduce a breaking change?

When developers merge from main and run the server, azd up, or azd deploy, will this produce an error?
If you're not sure, try it out on an old environment.

[ ] Yes
[x] No

Does this require changes to learn.microsoft.com docs?

This repository is referenced by this tutorial
which includes deployment, settings and usage instructions. If text or screenshot need to change in the tutorial,
check the box below and notify the tutorial author. A Microsoft employee can do this for you if you're an external contributor.

[ ] Yes
[x] No

Type of change

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

Code quality checklist

See CONTRIBUTING.md for more details.

• The current tests all pass (python -m pytest).
• I added tests that prove my fix is effective or that my feature works
• I ran python -m pytest --cov to verify 100% coverage of added lines
• I ran python -m mypy to check for type errors
• I either used the pre-commit hooks or ran ruff and black manually on my code.

[eifinger]

@microsoft-github-policy-service agree

[pamelafox]

Thanks! This looks good, but I'd like to get the CI to run to verify it before merging.

[pamelafox]

Not sure how to get the CI to run here, has this run on your own fork successfully?

[eifinger]

Not sure how to get the CI to run here, has this run on your own fork successfully?

I removed the line that filtered out PR triggers for changes to workflow files. I tested this PR successfully in this run: https://github.com/eifinger/azure-search-openai-demo/actions/runs/13228783804

[pamelafox]

Great, merging!