Support Python 3.14 #3986

Job	Run time
checks / pre-commit	29s
checks / readme-snippets	11s
checks / test (3.11, highest, ubuntu-latest)	45s
checks / test (3.10, highest, windows-latest)	2m 21s
checks / test (3.10, lowest-direct, windows-latest)	2m 18s
checks / test (3.10, highest, ubuntu-latest)	49s
checks / test (3.11, lowest-direct, ubuntu-latest)	46s
checks / test (3.12, lowest-direct, windows-latest)	3m 18s
checks / test (3.11, lowest-direct, windows-latest)	2m 27s
checks / test (3.10, lowest-direct, ubuntu-latest)	43s
checks / test (3.14, lowest-direct, ubuntu-latest)	12s
checks / test (3.13, highest, windows-latest)	2m 39s
checks / test (3.13, highest, ubuntu-latest)	46s
checks / test (3.14, highest, ubuntu-latest)	1m 8s
checks / test (3.13, lowest-direct, ubuntu-latest)	44s
checks / test (3.14, lowest-direct, windows-latest)	23s
checks / test (3.12, highest, ubuntu-latest)	52s
checks / test (3.12, highest, windows-latest)	3m 21s
checks / test (3.14, highest, windows-latest)	2m 35s
checks / test (3.13, lowest-direct, windows-latest)	2m 24s
checks / test (3.11, highest, windows-latest)	2m 31s
checks / test (3.12, lowest-direct, ubuntu-latest)	51s
	32m 33s

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