Swap Dict implementation to ankerl dense unordered #179

Job	Run time
check-changes	17s
ran-none	0s
start-nix-macos-apple-silicon-tests / nix-apple-silicon	27m 47s
start-macos-x86-64-tests / test-rust-macos-x86-64	37m 29s
start-nix-linux-aarch64-build-default-test / nix-linux-arm64	43m 24s
start-nix-linux-aarch64-cargo-build-test / nix-linux-arm64	43m 24s
start-nix-linux-x86-64-tests / nix-linux-x86	43m 27s
start-roc-benchmarks / benchmark roc programs	6m 4s
start-ubuntu-x86-64-tests / test zig, rust, wasm...	26m 42s
start-windows-release-build-test / windows-release-build	12m 34s
start-windows-tests / windows-test-subset	28m 3s
ran-full	1s
finish	1s
	4h 29m 13s

Provide feedback