CI: Compatibility with pytest-azurepipelines

[TomAugspurger]

#27416 (comment)

Failing on the prerelease at https://pypi.org/project/pytest-azurepipelines/1.0.0a1/

[datapythonista]

I don't think pytest-azurepipelines is adding as much value as expected. I thought besides the warnings it'd highlight the pytest error, which was the main reason to suggest it.

If it's causing problems, I'm happy to get rid of it.

[jbrockmendel]

is this active/actionable/closeable?

[TomAugspurger]

Let's assume closable.