Test

Add Python 3.15 test infrastructure #35986

Job	Run time
Check typeshed structure	10s
mypy: Run test cases	18m 20s
pyright: Run test cases (Linux, 3.12)	1m 35s
stub_uploader tests	5m 4s
pyright: Run test cases (Darwin, 3.14)	1m 19s
pyright: Run test cases (Darwin, 3.11)	1m 32s
pyright: Run test cases (Windows, 3.12)	2m 10s
pyright: Run test cases (Darwin, 3.12)	3m 56s
pyright: Run test cases (Windows, 3.13)	6m 26s
pyright: Run test cases (Linux, 3.13)	6m 27s
pyright: Run test cases (Windows, 3.11)	1m 39s
pyright: Run test cases (Darwin, 3.13)	2m 12s
pyright: Run test cases (Linux, 3.11)	1m 30s
mypy: Check stubs (linux, 3.11)	1m 57s
mypy: Check stubs (linux, 3.10)	1m 57s
mypy: Check stubs (linux, 3.14)	1m 55s
mypy: Check stubs (win32, 3.11)	1m 49s
mypy: Check stubs (win32, 3.12)	4m 25s
mypy: Check stubs (linux, 3.15)	2m 42s
mypy: Check stubs (win32, 3.15)	2m 51s
mypy: Check stubs (win32, 3.10)	1m 46s
mypy: Check stubs (linux, 3.12)	2m 0s
mypy: Check stubs (linux, 3.13)	2m 13s
mypy: Check stubs (darwin, 3.15)	7m 59s
mypy: Check stubs (darwin, 3.10)	2m 35s
pyright: Run test cases (Linux, 3.14)	6m 23s
mypy: Check stubs (darwin, 3.13)	6m 59s
mypy: Check stubs (darwin, 3.11)	1m 51s
mypy: Check stubs (darwin, 3.12)	2m 8s
mypy: Check stubs (darwin, 3.14)	2m 29s
mypy: Check stubs (win32, 3.13)	2m 25s
pyright: Run test cases (Windows, 3.14)	1m 49s
mypy: Check stubs (win32, 3.14)	7m 35s
	1h 58m 8s

Provide feedback