Test

Add Python 3.15 test infrastructure #35981

Job	Run time
Check typeshed structure	14s
mypy: Run test cases	14m 31s
pyright: Run test cases (Windows, 3.11)	1m 28s
pyright: Run test cases (Darwin, 3.11)	1m 28s
pyright: Run test cases (Darwin, 3.14)	1m 35s
pyright: Run test cases (Darwin, 3.13)	3m 2s
mypy: Check stubs (win32, 3.13)	3m 15s
pyright: Run test cases (Linux, 3.12)	1m 27s
mypy: Check stubs (win32, 3.11)	1m 50s
mypy: Check stubs (win32, 3.10)	2m 13s
pyright: Run test cases (Windows, 3.12)	1m 25s
stub_uploader tests	5m 0s
pyright: Run test cases (Linux, 3.13)	1m 43s
pyright: Run test cases (Darwin, 3.12)	3m 42s
mypy: Check stubs (linux, 3.13)	2m 2s
pyright: Run test cases (Linux, 3.11)	1m 38s
mypy: Check stubs (linux, 3.11)	2m 4s
pyright: Run test cases (Windows, 3.14)	1m 23s
pyright: Run test cases (Linux, 3.14)	1m 19s
mypy: Check stubs (darwin, 3.10)	1m 54s
mypy: Check stubs (linux, 3.15)	14m 41s
mypy: Check stubs (darwin, 3.12)	1m 57s
mypy: Check stubs (win32, 3.15)	14m 31s
mypy: Check stubs (darwin, 3.13)	2m 22s
mypy: Check stubs (win32, 3.12)	2m 29s
mypy: Check stubs (linux, 3.10)	2m 3s
pyright: Run test cases (Windows, 3.13)	6m 45s
mypy: Check stubs (linux, 3.14)	2m 8s
mypy: Check stubs (darwin, 3.11)	1m 45s
mypy: Check stubs (linux, 3.12)	2m 11s
mypy: Check stubs (darwin, 3.15)	14m 36s
mypy: Check stubs (darwin, 3.14)	1m 57s
mypy: Check stubs (win32, 3.14)	2m 28s
	2h 3m 6s

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