fix formatter, coveragee

[rainyl]

fix formatter and coverage actions

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 95.23810% with 1 line in your changes missing coverage. Please review.

Project coverage is 90.55%. Comparing base (9bbf19c) to head (1c73d7d).

Files with missing lines	Patch %	Lines
packages/dartcv/lib/src/core/core_async.dart	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff            @@
##           main     #269       +/-   ##
=========================================
+ Coverage      0   90.55%   +90.55%     
=========================================
  Files         0       49       +49     
  Lines         0     9049     +9049     
=========================================
+ Hits          0     8194     +8194     
- Misses        0      855      +855     

Flag	Coverage Δ
unittests	90.55% <95.23%> (?)

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