Adopt setuptools_scm #5032

Job	Run time
collateral (diffcov)	5m 22s
test (3.8, ubuntu-latest)	3m 50s
collateral (docs)	1m 57s
test_cygwin (39, windows-latest)	18m 44s
test (3.8, windows-latest)	3m 37s
test (3.12, ubuntu-latest)	3m 52s
test (3.12, macos-latest)	3m 55s
test (3.12, windows-latest)	3m 44s
test (3.9, ubuntu-latest)	3m 52s
test (3.10, ubuntu-latest)	3m 48s
test (3.11, ubuntu-latest)	3m 53s
test (pypy3.10, ubuntu-latest, stdlib)	3m 51s
test (ubuntu-latest, 3.10, stdlib)	3m 34s
test (3.8, macos-13)	3m 52s
integration-test	0s
check	3s
release	0s
	1h 7m 54s

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