Fix devdeps job #548

Job	Run time
tests / Load tox environments	4s
tests / py38-test-oldestdeps (macos-latest)	57s
tests / py39-test (macos-latest)	17m 47s
tests / py310-test (macos-latest)	14m 2s
tests / py311-test (macos-latest)	14m 49s
tests / py312-test (macos-latest)	16m 46s
tests / py38-test-oldestdeps (ubuntu-latest)	30s
tests / py38-test (ubuntu-latest)	22s
tests / py39-test (ubuntu-latest)	9m 26s
tests / py310-test (ubuntu-latest)	9m 33s
tests / py311-test (ubuntu-latest)	9m 25s
tests / py312-test (ubuntu-latest)	11m 35s
tests / py312-test-devdeps (ubuntu-latest)	2m 22s
tests / py38-test-oldestdeps (windows-latest)	48s
tests / py39-test (windows-latest)	11m 37s
tests / py310-test (windows-latest)	12m 32s
tests / py311-test (windows-latest)	11m 50s
tests / py312-test (windows-latest)	12m 25s
publish	0s
	2h 36m 50s

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