chore(deps): bump cachix/install-nix-action from 29 to 30 (#730) #1262

Job	Run time
check-dead-code	1m 15s
check-fmt	37s
examples-darwin	2m 16s
examples-linux (alt-registry)	1m 32s
tests (https://releases.nixos.org/nix/nix-2.18.2/install)	2m 54s
examples-linux (build-std)	1m 36s
tests (https://releases.nixos.org/nix/nix-2.18.2/install, --override-input nixpkgs $(./ci/ref-fro...	3m 22s
examples-linux (cross-musl)	1m 43s
examples-linux (cross-rust-overlay)	1m 38s
examples-linux (cross-windows)	1m 29s
examples-linux (custom-toolchain)	1m 38s
examples-linux (end-to-end-testing)	1m 58s
examples-linux (quick-start)	1m 33s
examples-linux (quick-start-simple)	1m 30s
examples-linux (quick-start-workspace)	1m 44s
examples-linux (sqlx)	1m 32s
examples-linux (trunk-workspace)	1m 36s
examples-linux (trunk)	1m 38s
all systems go	0s
	31m 31s

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