TST: Use pytest-dev for py310 in v5.0.x

[pllim]

I don't understand why this is not cropping up in main and I don't have time to dig, but it is a known issue. xref pytest-dev/pytest#9169 . As long as CI is green again, good enough until next pytest release?

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[pllim]

A lot of things broken related to ASDF here:

• linkcheck: https://asdf-standard.readthedocs.io/ (404 Client Error...) -- RTD build is failing asdf-format/asdf-standard#297
• py310 with devdeps (dev asdf and dev pytest): jsonschema.exceptions.RefResolutionError: Unable to fetch schema from non-file URL: http://stsci.edu/schemas/asdf/transform/transform-1.2.0 -- Add asdf-standard to the CI asdf-format/asdf#1081 (the PR also addresses the issue below)
• py38 with devdeps (dev asdf and stable pytest): asdf.exceptions.AsdfWarning: Unable to locate schema file for 'tag:stsci.edu:asdf/transform/rotate2d-1.3.0': 'http://stsci.edu/schemas/asdf/transform/rotate2d-1.3.0'