fix(deps): update dependency opt_einsum to v3.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
opt_einsum	==3.3.0 → ==3.4.0

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.76%. Comparing base (e8ed9a3) to head (92e0d20).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #39      +/-   ##
==========================================
+ Coverage   82.72%   82.76%   +0.03%     
==========================================
  Files          71       71              
  Lines        3202     3202              
==========================================
+ Hits         2649     2650       +1     
+ Misses        553      552       -1     

see 1 file with indirect coverage changes

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