chore: Update to hugr 0.6.0, fix breaking changes #1458

Job	Run time
Check for changes	6s
tests (Python)	1m 17s
Check Python code 🐍	39s
Check Rust code 🦀	1m 25s
Build benchmarks 🏋️	3m 56s
tests (Rust stable, all features)	1m 35s
tests (Rust 1.75)	2m 8s
tests (Rust stable, no features)	1m 35s
tests (Rust beta)	2m 2s
tests (Rust nightly-2024-05-22)	1m 58s
Check Python coverage 🐍	1m 11s
Required checks 🦀+🐍	1s
Check Rust coverage 🦀	2m 44s
	20m 37s

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