Allow quotes in `test_command` input #319

Job	Run time
release_default / Build source distribution	41s
release_sdist_only / Build source distribution	37s
release_default / Load build targets	6s
release / Build source distribution	31s
release / Load build targets	7s
release_sdist_only / Load build targets	0s
release_sdist_only / Build ${{ matrix.target }} wheels	0s
release_default / Build linux wheels	8m 48s
release_default / Build macos wheels	11m 28s
release_default / Build windows wheels	14m 29s
release / Build linux wheels	1m 9s
release / Build cp38-macosx_x86_64 wheels	1m 39s
release / Build cp39-macosx_arm64 wheels	1m 36s
release / Build cp3?-win_amd64 wheels	2m 19s
release / Build cp39-manylinux_aarch64 wheels	3m 42s
release_sdist_only / Upload	0s
release / Upload	0s
release_default / Upload	0s
	47m 12s

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