chore(deps): update actions/checkout action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v4 → v6

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

v5

Compare Source

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.17%. Comparing base (5863649) to head (4981df5).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1304   +/-   ##
=======================================
  Coverage   81.17%   81.17%           
=======================================
  Files          51       51           
  Lines         834      834           
  Branches      242      242           
=======================================
  Hits          677      677           
  Misses        150      150           
  Partials        7        7           

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