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

[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

• Check out other refs/* by commit if provided, fall back to ref by @​orhantoy in https://github.com/actions/checkout/pull/1924

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Configuration

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[codecov]

Codecov Report

Merging #34 (a108877) into master (c9a6b01) will decrease coverage by 0.26%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #34      +/-   ##
==========================================
- Coverage   82.23%   81.97%   -0.26%     
==========================================
  Files          11       11              
  Lines         394      394              
==========================================
- Hits          324      323       -1     
- Misses         70       71       +1     

see 1 file with indirect coverage changes