Add Python 3.15 profiling stubs #15257

Job	Run time
stubtest: stdlib (windows-latest, 3.12)	1m 7s
stubtest: stdlib (ubuntu-latest, 3.12)	34s
stubtest: stdlib (ubuntu-latest, 3.15)	45s
stubtest: stdlib (ubuntu-latest, 3.14)	40s
stubtest: stdlib (ubuntu-latest, 3.11)	37s
stubtest: stdlib (windows-latest, 3.15)	1m 48s
stubtest: stdlib (windows-latest, 3.11)	1m 9s
stubtest: stdlib (windows-latest, 3.13)	1m 30s
stubtest: stdlib (windows-latest, 3.14)	1m 27s
stubtest: stdlib (ubuntu-latest, 3.10)	34s
stubtest: stdlib (macos-latest, 3.12)	28s
stubtest: stdlib (ubuntu-latest, 3.13)	36s
stubtest: stdlib (macos-latest, 3.10)	48s
stubtest: stdlib (macos-latest, 3.11)	30s
stubtest: stdlib (macos-latest, 3.15)	56s
stubtest: stdlib (macos-latest, 3.13)	29s
stubtest: stdlib (macos-latest, 3.14)	28s
	14m 26s

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