Make compatible with pytest-asyncio #543

Job	Run time
tests (ubuntu-latest, 3.9, py39-test-pytestoldest)	45s
tests (windows-latest, 3.9, py39-test-pytest50)	2m 11s
tests (macos-13, 3.9, py39-test-pytest51)	1m 42s
tests (ubuntu-latest, 3.9, py39-test-pytest60)	45s
tests (ubuntu-latest, 3.9, py39-test-pytest62)	41s
tests (ubuntu-latest, 3.10, py310-test-pytest70)	43s
tests (ubuntu-latest, 3.10, py310-test-pytest71)	44s
tests (windows-latest, 3.11, py311-test-pytest72)	2m 5s
tests (ubuntu-latest, 3.11, py311-test-pytest73)	42s
tests (ubuntu-latest, 3.11, py311-test-pytest74)	42s
tests (ubuntu-latest, 3.12, py312-test-pytest80)	51s
tests (windows-latest, 3.12, py312-test-pytest81)	2m 31s
tests (ubuntu-latest, 3.12, py312-test-pytest82)	53s
tests (macos-latest, 3.13, py313-test-pytest83)	37s
tests (windows-latest, 3.13, py313-test-pytestdev)	3m 35s
tests (macos-latest, 3.12, py312-test-pytestdev)	50s
tests (ubuntu-latest, 3.13, py313-test-pytestdev-numpydev)	1m 15s
tests (ubuntu-latest, 3.13, py313-test-pytest83-pytestasyncio)	59s
	22m 31s

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