Bump actions/checkout from 3 to 4 #198

Job	Run time
docs-pr	2s
spell check with typos	6s
build-on-linux (linux-kvm-debug)	53s
build-on-windows (windows-debug)	44s
build-on-windows (windows-release)	39s
build-on-linux (linux-kvm-release)	52s
build-on-linux (linux-hyperv-debug)	55s
build-on-linux (linux-hyperv-release)	58s
fuzzing / fuzz	8m 41s
rust / build (windows-2022-debug-amd)	14m 14s
rust / build (linux-kvm-debug-amd)	9m 22s
rust / build (linux-hyperv-debug-amd)	9m 36s
rust / build (windows-2022-release-amd)	18m 28s
rust / build (linux-kvm-release-amd)	12m 49s
rust / build (linux-hyperv-release-amd)	12m 54s
rust / build (windows-2022-debug-intel)	13m 43s
rust / build (linux-kvm-debug-intel)	8m 34s
rust / build (linux-hyperv-debug-intel)	9m 52s
rust / build (windows-2022-release-intel)	17m 48s
rust / build (linux-kvm-release-intel)	12m 48s
rust / build (linux-hyperv-release-intel)	12m 24s
	2h 46m 22s

Provide feedback