Swap Dict implementation to ankerl dense unordered #173

Job	Run time
check-changes	16s
ran-none	0s
start-nix-linux-aarch64-build-default-test / nix-linux-arm64	2m 6s
start-nix-macos-apple-silicon-tests / nix-apple-silicon	2m 6s
start-macos-x86-64-tests / test-rust-macos-x86-64	2m 8s
start-nix-linux-aarch64-cargo-build-test / nix-linux-arm64	2m 4s
start-nix-linux-x86-64-tests / nix-linux-x86	2m 7s
start-windows-release-build-test / windows-release-build	1m 46s
start-roc-benchmarks / benchmark roc programs	2m 9s
start-ubuntu-x86-64-tests / test zig, rust, wasm...	1s
start-windows-tests / windows-test-subset	1m 45s
ran-full	1s
finish	1s
	16m 30s

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