Add Python 3.15 profiling stubs #15259

Job	Run time
stubtest: stdlib (ubuntu-latest, 3.14)	37s
stubtest: stdlib (ubuntu-latest, 3.13)	35s
stubtest: stdlib (ubuntu-latest, 3.11)	36s
stubtest: stdlib (windows-latest, 3.13)	15s
stubtest: stdlib (windows-latest, 3.12)	1m 27s
stubtest: stdlib (ubuntu-latest, 3.15)	48s
stubtest: stdlib (ubuntu-latest, 3.10)	35s
stubtest: stdlib (ubuntu-latest, 3.12)	33s
stubtest: stdlib (windows-latest, 3.14)	1m 1s
stubtest: stdlib (macos-latest, 3.13)	36s
stubtest: stdlib (macos-latest, 3.14)	35s
stubtest: stdlib (macos-latest, 3.11)	28s
stubtest: stdlib (macos-latest, 3.15)	48s
stubtest: stdlib (windows-latest, 3.11)	2m 5s
stubtest: stdlib (windows-latest, 3.15)	1m 40s
stubtest: stdlib (macos-latest, 3.12)	29s
stubtest: stdlib (macos-latest, 3.10)	51s
	13m 59s

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