chore(deps-rs): Update to hugr 0.9.1

[aborgna-q]

Closes #507

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.43%. Comparing base (7b14f18) to head (4326e89).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #510      +/-   ##
==========================================
- Coverage   83.49%   83.43%   -0.07%     
==========================================
  Files          64       64              
  Lines        6647     6647              
  Branches     6126     6126              
==========================================
- Hits         5550     5546       -4     
- Misses        817      820       +3     
- Partials      280      281       +1     

Flag	Coverage Δ
python	96.73% <ø> (ø)
rust	82.30% <ø> (-0.07%)	⬇️

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