take publish workflow steps from scipy-release #31

Job	Run time
Build sdist	3m 22s
Repackage licenses in sdist for binary distribution	4s
Build wheels on ${{ matrix.os }} for ${{ matrix.cibw_archs }}	0s
Publish release to TestPyPI	-1s
Publish release to PyPI	0s
Ensure commit is tag before upload to PyPi	-1s
	3m 24s

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