Bump mypy from 1.13.0 to 1.14.0 #303

Job	Run time
upgrade & test conformance tests	3m 2s
CI tests via Tox (3, 8, lint)	20s
CI tests via Tox (3, 8, unit)	28s
cwl-utils release test	1m 24s
CI tests via Tox (3, 8, mypy)	23s
CI tests via Tox (3, 9, lint)	17s
CI linters via Tox (lintreadme)	30s
CI tests via Tox (3, 9, unit)	23s
CI linters via Tox (pydocstyle)	23s
CI tests via Tox (3, 9, mypy)	29s
CI tests via Tox (3, 10, lint)	12s
CI tests via Tox (3, 10, unit)	29s
CI tests via Tox (3, 10, mypy)	27s
CI tests via Tox (3, 11, lint)	16s
CI tests via Tox (3, 11, unit)	28s
CI tests via Tox (3, 11, mypy)	27s
CI tests via Tox (3, 12, lint)	14s
CI tests via Tox (3, 12, unit)	29s
CI tests via Tox (3, 12, mypy)	32s
	11m 13s

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