Update mac target in CI to `aarch64-apple-darwin` #471

Job	Run time
Test (ubuntu-24.04, x86_64-unknown-linux-gnu)	8m 14s
Android (ubuntu-24.04, aarch64-linux-android, x86_64-unknown-linux-gnu)	8m 8s
Test (macOS-latest, aarch64-apple-darwin)	8m 54s
Compiletest (ubuntu-24.04, x86_64-unknown-linux-gnu)	6m 2s
Compiletest (windows-2022, x86_64-pc-windows-msvc)	11m 0s
Lint	6m 9s
Compiletest (macOS-latest, aarch64-apple-darwin)	5m 50s
Test (windows-2022, x86_64-pc-windows-msvc)	16m 56s
Difftest (windows-2022, x86_64-pc-windows-msvc)	15m 40s
Difftest (ubuntu-24.04, x86_64-unknown-linux-gnu)	8m 29s
cargo-deny	1m 16s
Difftest (macOS-latest, aarch64-apple-darwin)	9m 43s
test_success	3s
	1h 46m 24s

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