re-enable linux arm64 builds #3226

Job	Run time
docs	4m 46s
build-and-test (ubuntu-latest, x86_64-unknown-linux-gnu)	6m 4s
build-and-test (ubuntu-latest, aarch64-unknown-linux-gnu)	4m 59s
build-and-test (macos-latest, x86_64-apple-darwin)	28m 11s
build-and-test (macos-latest, aarch64-apple-darwin)	19m 36s
build-and-test (windows-latest, x86_64-pc-windows-msvc)	24m 4s
build-fuzz	1m 41s
cargo-deny (advisories)	3m 28s
cargo-deny (bans licenses sources)	3m 36s
fmt	7s
publish-dry-run	0s
rust-analyzer-compat	11m 1s
complete	1s
	1h 47m 34s

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