chore(deps): update actions/checkout action to v4 (main)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v3 -> v4

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Release Notes

actions/checkout (actions/checkout)

v4

Compare Source

• Support fetching without the --progress option
• Update to node20

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Configuration

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.50% 🎉

Comparison is base (c069853) 83.50% compared to head (2e44181) 84.00%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #203      +/-   ##
============================================
+ Coverage     83.50%   84.00%   +0.50%     
  Complexity       57       57              
============================================
  Files            17       17              
  Lines           200      200              
  Branches          6        6              
============================================
+ Hits            167      168       +1     
+ Misses           30       29       -1     
  Partials          3        3              

Flag	Coverage Δ
unittests	84.00% <ø> (+0.50%)	⬆️

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see 1 file with indirect coverage changes

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