Switch CI eval to `aarch64-darwin` #3390

Job	Run time
nix-build	1m 23s
cabal	29s
tests-benchmarks	37s
runghc	30s
unit-tests	9s
multi-target	53s
cabal-doExactConfig	38s
shellFor-multiple-package	31s
shellFor-not-depends	20s
shellFor-hoogle	30s
shellFor-single-package	23s
docs	55s
maintainer-scripts	9s
plan-extra-hackages	12s
build-extra-hackages	11s
hix	31s
hydra-ifdLevel-2	3m 27s
hydra-without-remote-builders-ghc9102	10s
haskell-nix-roots-do-not-require-IFDs	26s
hydra-ifdLevel-3	11m 24s
hix-cabal	12s
closure-size	8s
hydra-ifdLevel-0-and-1	2m 18s
check-materialization-concurrency	23s
update-docs	9s
check-path-support	10s
hydra-without-remote-builders-ghc967	9s
check-nix-tools	15s
	27m 32s

Provide feedback