Bump bitflags from 2.6.0 to 2.8.0 #475

Job	Run time
docs-pr	3s
spell check with typos	3s
build-on-linux (linux-kvm-debug)	1m 9s
build-on-windows (windows-debug)	36s
build-on-linux (linux-kvm-release)	1m 29s
build-on-windows (windows-release)	37s
build-on-linux (linux-hyperv-debug)	1m 6s
build-on-linux (linux-hyperv-release)	1m 19s
fuzzing / fuzz	10m 7s
rust / build (hyperv, amd, debug)	16m 58s
rust / build (hyperv, amd, release)	23m 9s
rust / build (hyperv, intel, debug)	17m 41s
rust / build (hyperv, intel, release)	21m 30s
rust / build (mshv, amd, debug)	11m 58s
rust / build (mshv, amd, release)	15m 3s
rust / build (mshv, intel, debug)	10m 23s
rust / build (mshv, intel, release)	13m 54s
rust / build (kvm, amd, debug)	13m 9s
rust / build (kvm, amd, release)	15m 41s
rust / build (kvm, intel, debug)	12m 19s
rust / build (kvm, intel, release)	15m 21s
	3h 23m 35s

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