bump python version to 1.31.0 #1343

Job	Run time
build-lint-test (3.10, windows-latest)	7m 29s
build-lint-test (3.10, macos-arm)	8m 18s
build-lint-test (3.14, macos-arm)	6m 54s
build-lint-test (3.10, macos-intel)	11m 41s
build-lint-test (3.14, ubuntu-latest)	6m 36s
build-lint-test (3.10, ubuntu-latest)	6m 44s
build-lint-test (3.14, macos-intel)	10m 12s
build-lint-test (3.14, windows-latest)	8m 5s
	1h 5m 59s

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