go back to setup.py dynamic version #804

Job	Run time
build (ubuntu-latest, 3.9, 8.2)	7m 21s
build (ubuntu-latest, 3.9, 8.1)	7m 25s
build (ubuntu-latest, 3.13, 8.1)	46s
build (ubuntu-latest, 3.9, latest)	10m 44s
build (ubuntu-22.04, 3.7, 8.1)	7m 29s
build (ubuntu-latest, 3.13, 8.2)	54s
build (ubuntu-latest, 3.13, latest)	1m 2s
build (ubuntu-22.04, 3.7, latest)	11m 43s
build (ubuntu-22.04, 3.7, 8.2)	7m 22s
fossa-scan / Run fossa scan on repository	32s
fossa-scan / Fetch fossa results	1m 1s
	56m 19s

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