Upload mac ARM build artifacts to cachix #266

Job	Run time
nix-build-book	35s
nix-fmt-check	25s
nix-build (fuel, ubuntu-latest)	48s
nix-build (fuel, macos-latest)	2m 21s
nix-build (fuel, macos-arm)	18s
nix-build (fuel-beta-1, ubuntu-latest)	37s
nix-build (fuel-beta-1, macos-latest)	2m 18s
nix-build (fuel-beta-1, macos-arm)	17s
nix-build (fuel-beta-2, ubuntu-latest)	40s
nix-build (fuel-beta-2, macos-latest)	2m 2s
nix-build (fuel-beta-2, macos-arm)	12s
nix-build (fuel-beta-3, ubuntu-latest)	44s
nix-build (fuel-beta-3, macos-latest)	2m 15s
nix-build (fuel-beta-3, macos-arm)	15s
nix-build (fuel-beta-4-rc, ubuntu-latest)	31s
nix-build (fuel-beta-4-rc, macos-latest)	2m 32s
nix-build (fuel-beta-4-rc, macos-arm)	13s
nix-build (fuel-nightly, ubuntu-latest)	36s
nix-build (fuel-nightly, macos-latest)	2m 23s
nix-build (fuel-nightly, macos-arm)	16s
nix-build (sway-vim, ubuntu-latest)	26s
nix-build (sway-vim, macos-latest)	1m 41s
nix-build (sway-vim, macos-arm)	9s
nix-develop (ubuntu-latest)	1m 53s
nix-develop (macos-latest)	1s
nix-develop (macos-arm)	14s
	24m 42s

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