Update black requirement from ~=23.7 to ~=23.9 #679

Job	Run time
cwl-utils release test	6h 0m 15s
CI linters via Tox (lint-readme)	20s
CI tests via Tox (3, 8, lint)	28s
CI tests via Tox (3, 8, unit)	2m 47s
CI linters via Tox (pydocstyle)	18s
CI tests via Tox (3, 8, bandit)	50s
CI tests via Tox (3, 8, mypy)	55s
CI tests via Tox (3, 9, lint)	29s
CI tests via Tox (3, 9, unit)	3m 37s
CI tests via Tox (3, 9, bandit)	38s
CI tests via Tox (3, 9, mypy)	48s
CI tests via Tox (3, 10, lint)	32s
CI tests via Tox (3, 10, unit)	3m 36s
CI tests via Tox (3, 10, bandit)	39s
CI tests via Tox (3, 10, mypy)	47s
CI tests via Tox (3, 11, lint)	36s
CI tests via Tox (3, 11, unit)	7m 37s
CI tests via Tox (3, 11, bandit)	33s
CI tests via Tox (3, 11, mypy)	1m 9s
CI tests via Tox (3, 12, lint)	47s
CI tests via Tox (3, 12, unit)	6h 0m 14s
CI tests via Tox (3, 12, bandit)	49s
CI tests via Tox (3, 12, mypy)	1m 28s
	12h 30m 12s

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