chore: release v0.12.3

[hugrbot]

🤖 New release

• portgraph: 0.12.2 -> 0.12.3 (✓ API compatible changes)

Changelog

0.12.2 - 2024-07-05

Bug Fixes

• Intergraph edges in mermaid rendering (#139)

New Features

• Add PortOffset::opposite (#136)
• Efficient LCA algorithm for the hierarchy (#138)

Testing

• Use insta for mermaid/dot render tests (#137)

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This PR was generated with release-plz.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.61%. Comparing base (cfb9c57) to head (987b755).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #142   +/-   ##
=======================================
  Coverage   80.61%   80.61%           
=======================================
  Files          22       22           
  Lines        5169     5169           
  Branches     5169     5169           
=======================================
  Hits         4167     4167           
  Misses        929      929           
  Partials       73       73           

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