Fix cibuildwheel #981

Job	Run time
mypy	16s
build (3.5, yes, ubuntu-20.04)	1s
build (3.5, no, ubuntu-20.04)	1s
build (3.6, yes, ubuntu-20.04)	1s
test_c_windows (x64)	41s
test_c_linux (0, x64)	51s
test_c_windows (win32)	40s
build_python_27 (ubuntu-20.04, yes)	45s
build (3.6, no, ubuntu-20.04)	1s
test_c_linux (0, x32)	56s
test_c_linux (1, x64)	53s
build_python_27 (ubuntu-20.04, no)	46s
build (3.7, yes, ubuntu-20.04)	1s
build_python_27 (windows-latest, yes)	42s
test_c_linux (1, x32)	56s
build (3.7, no, ubuntu-20.04)	1s
build_python_27 (windows-latest, no)	46s
build (3.8, yes, ubuntu-20.04)	1s
build (3.8, no, ubuntu-20.04)	1s
build (3.9, yes, ubuntu-20.04)	1s
build (3.9, no, ubuntu-20.04)	1s
build (3.10, yes, ubuntu-20.04)	54s
build (3.10, no, ubuntu-20.04)	57s
build (3.11, yes, ubuntu-20.04)	57s
build (3.11, no, ubuntu-20.04)	56s
build (3.12-dev, yes, ubuntu-20.04)	1s
build (3.12-dev, no, ubuntu-20.04)	1s
build (3.11, yes, macos-12)	47s
build (3.11, no, windows-latest)	42s
build (3.11, yes, windows-latest)	42s
build (3.12-dev, no, windows-latest)	41s
build (3.12-dev, yes, windows-latest)	1s
build (pypy2.7, no, ubuntu-latest)	1s
build (pypy3.9, no, ubuntu-latest)	1s
	15m 3s

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