Update MacOS to arm64 #78

Job	Run time
downstream	36m 45s
linux-compat (manylinux1-x64)	35s
linux-compiler-compat (clang-3)	1m 1s
linux-compat (manylinux1-x86)	37s
clang-sanitizers (,thread)	1m 12s
linux-compiler-compat (clang-6)	5m 36s
linux-compat (manylinux2014-x64)	49s
clang-sanitizers (,address,undefined)	1m 15s
linux-shared-libs	50s
linux-compat (manylinux2014-x86)	52s
linux-compiler-compat (clang-8)	4m 51s
linux-compat (fedora-34-x64)	1m 20s
linux-compiler-compat (clang-9)	4m 59s
macos	38s
linux-compat (opensuse-leap)	57s
linux-compiler-compat (clang-10)	1m 13s
macos-x64	53s
linux-compat (rhel8-x64)	37s
linux-compiler-compat (clang-11)	1m 23s
linux-compat (al2-x64)	34s
linux-compiler-compat (gcc-4.8)	50s
windows	2m 11s
windows-app-verifier	2m 26s
linux-compiler-compat (gcc-5)	1m 7s
linux-compiler-compat (gcc-6)	1m 17s
windows-shared-libs	1m 57s
windows-vc14 (x86)	1m 3s
linux-compiler-compat (gcc-7)	56s
linux-compiler-compat (gcc-8)	1m 1s
windows-vc14 (x64)	1m 23s
	1h 21m 8s

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