Checkout Submodules in GHA #118

Job	Run time
build (master, windows-2022)	12m 30s
build (master, windows-2019)	11m 54s
build (master, ubuntu-22.04)	29m 18s
build (master, ubuntu-20.04)	34m 48s
build (master, macos-12)	29m 31s
build (master, macos-11)	36m 49s
build (latest-release, windows-2022)	12m 34s
build (latest-release, windows-2019)	12m 13s
build (latest-release, ubuntu-22.04)	33m 7s
build (latest-release, ubuntu-20.04)	38m 0s
build (latest-release, macos-12)	39m 27s
build (latest-release, macos-11)	36m 11s
	5h 26m 22s

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