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 #5 (4e8f028) into main (3e1c0c1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main       #5   +/-   ##
=======================================
  Coverage   73.41%   73.41%           
=======================================
  Files          13       13           
  Lines         756      756           
=======================================
  Hits          555      555           
  Misses        201      201           

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