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 #35 (7cef62f) into main (98ff938) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #35   +/-   ##
=======================================
  Coverage   57.45%   57.45%           
=======================================
  Files          30       30           
  Lines        1798     1798           
=======================================
  Hits         1033     1033           
  Misses        644      644           
  Partials      121      121           

Flag	Coverage Δ
integration	26.86% <ø> (ø)
unit	39.76% <ø> (ø)

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