Support Python 3.14 #4006

Job	Run time
checks / readme-snippets	14s
checks / pre-commit	31s
checks / test (3.11, lowest-direct, ubuntu-latest)	47s
checks / test (3.10, highest, windows-latest)	2m 26s
checks / test (3.10, highest, ubuntu-latest)	49s
checks / test (3.10, lowest-direct, windows-latest)	2m 19s
checks / test (3.13, highest, ubuntu-latest)	48s
checks / test (3.12, highest, windows-latest)	3m 22s
checks / test (3.11, lowest-direct, windows-latest)	2m 28s
checks / test (3.11, highest, windows-latest)	2m 37s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 6s
checks / test (3.13, lowest-direct, windows-latest)	2m 32s
checks / test (3.11, highest, ubuntu-latest)	49s
checks / test (3.13, highest, windows-latest)	2m 30s
checks / test (3.13, lowest-direct, ubuntu-latest)	43s
checks / test (3.12, lowest-direct, windows-latest)	3m 18s
checks / test (3.12, lowest-direct, ubuntu-latest)	50s
checks / test (3.14, highest, ubuntu-latest)	1m 7s
checks / test (3.10, lowest-direct, ubuntu-latest)	48s
checks / test (3.14, lowest-direct, windows-latest)	2m 15s
checks / test (3.12, highest, ubuntu-latest)	52s
checks / test (3.14, highest, windows-latest)	2m 26s
	35m 37s

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