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

[renovate[bot]]

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`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v400) [Compare Source](https://togithub.com/actions/checkout/compare/v3...v4) - [Support fetching without the --progress option](https://togithub.com/actions/checkout/pull/1067) - [Update to node20](https://togithub.com/actions/checkout/pull/1436)

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Configuration

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[codecov[bot]]

Codecov Report

Merging #104 (0d87bc9) into main (4e3b2d3) will increase coverage by 1.56%. The diff coverage is n/a.

@@             Coverage Diff             @@
##             main      #104      +/-   ##
===========================================
+ Coverage   98.43%   100.00%   +1.56%     
===========================================
  Files           1         1              
  Lines          64        64              
  Branches       10         9       -1     
===========================================
+ Hits           63        64       +1     
+ Partials        1         0       -1     

see 1 file with indirect coverage changes

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