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Add zizmor checks for GitHub Actions #16036

Job	Run time
stubtest: stdlib (windows-latest, 3.14)	1m 10s
stubtest: stdlib (macos-latest, 3.13)	47s
stubtest: stdlib (ubuntu-latest, 3.10)	41s
stubtest: stdlib (ubuntu-latest, 3.14)	42s
stubtest: stdlib (windows-latest, 3.15)	1m 50s
stubtest: stdlib (windows-latest, 3.13)	1m 2s
stubtest: stdlib (macos-latest, 3.12)	40s
stubtest: stdlib (ubuntu-latest, 3.12)	29s
stubtest: stdlib (ubuntu-latest, 3.15)	50s
stubtest: stdlib (macos-latest, 3.14)	52s
stubtest: stdlib (ubuntu-latest, 3.11)	48s
stubtest: stdlib (macos-latest, 3.15)	1m 35s
stubtest: stdlib (windows-latest, 3.12)	1m 26s
stubtest: stdlib (ubuntu-latest, 3.13)	31s
stubtest: stdlib (macos-latest, 3.10)	49s
stubtest: stdlib (windows-latest, 3.11)	1m 16s
stubtest: stdlib (macos-latest, 3.11)	33s
	16m 1s