Bump cc from 1.2.4 to 1.2.9 #465

Job	Run time
docs-pr	4s
spell check with typos	4s
build-on-linux (linux-kvm-debug)	1m 18s
build-on-windows (windows-debug)	38s
build-on-linux (linux-kvm-release)	1m 14s
build-on-windows (windows-release)	36s
build-on-linux (linux-hyperv-debug)	1m 6s
build-on-linux (linux-hyperv-release)	1m 20s
fuzzing / fuzz	9m 41s
rust / build (hyperv, amd, debug)	17m 20s
rust / build (hyperv, amd, release)	24m 33s
rust / build (hyperv, intel, debug)	18m 7s
rust / build (hyperv, intel, release)	23m 1s
rust / build (mshv, amd, debug)	11m 24s
rust / build (mshv, amd, release)	15m 23s
rust / build (mshv, intel, debug)	10m 40s
rust / build (mshv, intel, release)	15m 52s
rust / build (kvm, amd, debug)	12m 42s
rust / build (kvm, amd, release)	16m 7s
rust / build (kvm, intel, debug)	11m 27s
rust / build (kvm, intel, release)	14m 51s
	3h 27m 28s

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