Try enabling M1 builds with new GitHub runners #360

Job	Run time
install-cross (linux-musl)	9s
macos (stable, x86_64-apple-darwin)	1s
macos (stable, aarch64-apple-darwin)	1s
macos (beta, x86_64-apple-darwin)	1s
macos (beta, aarch64-apple-darwin)	1s
macos (nightly, x86_64-apple-darwin)	1s
macos (nightly, aarch64-apple-darwin)	1s
linux (stable, arm-unknown-linux-gnueabi)	55s
linux (stable, armv7-unknown-linux-gnueabihf)	56s
linux (stable, i686-unknown-linux-musl)	42s
linux (stable, x86_64-unknown-linux-musl)	1s
linux (stable, aarch64-unknown-linux-gnu)	54s
linux (stable, aarch64-unknown-linux-musl)	56s
linux (stable, arm-unknown-linux-gnueabihf)	56s
linux (beta, arm-unknown-linux-gnueabi)	52s
linux (beta, armv7-unknown-linux-gnueabihf)	59s
linux (beta, i686-unknown-linux-musl)	58s
linux (beta, x86_64-unknown-linux-musl)	56s
linux (beta, aarch64-unknown-linux-gnu)	56s
linux (beta, aarch64-unknown-linux-musl)	1m 1s
linux (beta, arm-unknown-linux-gnueabihf)	59s
linux (nightly, arm-unknown-linux-gnueabi)	41s
linux (nightly, armv7-unknown-linux-gnueabihf)	40s
linux (nightly, i686-unknown-linux-musl)	40s
linux (nightly, x86_64-unknown-linux-musl)	41s
linux (nightly, aarch64-unknown-linux-gnu)	40s
linux (nightly, aarch64-unknown-linux-musl)	42s
linux (nightly, arm-unknown-linux-gnueabihf)	39s
	16m 59s

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