fix(pygit2) migrate ls_remotes to list_heads

[shcheklein]

Silence another noisy warning.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 79.13%. Comparing base (a38304b) to head (3dd271b).
⚠️ Report is 53 commits behind head on main.

Files with missing lines	Patch %	Lines
src/scmrepo/git/backend/pygit2/__init__.py	91.66%	0 Missing and 1 partial ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #453      +/-   ##
==========================================
+ Coverage   77.32%   79.13%   +1.81%     
==========================================
  Files          42       42              
  Lines        5296     5449     +153     
  Branches      473      482       +9     
==========================================
+ Hits         4095     4312     +217     
+ Misses       1029      971      -58     
+ Partials      172      166       -6     

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[skshetry]

Test failures are unrelated, is also failing on the main branch.

[shcheklein]

I can't merge this (just a reminder :) )

[skshetry]

I can't merge this (just a reminder :) )

Could you please respond to this? #453 (comment). Thanks.