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

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

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Configuration

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[codecov]

Codecov Report

Merging #521 (5be7fd9) into main (a132703) will decrease coverage by 1.27%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main     #521      +/-   ##
============================================
- Coverage     99.07%   97.81%   -1.27%     
- Complexity        0      186     +186     
============================================
  Files            27       82      +55     
  Lines          1085     1511     +426     
  Branches         97      111      +14     
============================================
+ Hits           1075     1478     +403     
- Misses           10       28      +18     
- Partials          0        5       +5     

see 55 files with indirect coverage changes