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

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (main@d452395). Click here to learn what that means.

❗ Current head bca0fe9 differs from pull request most recent head 368f598. Consider uploading reports for the commit 368f598 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #4   +/-   ##
=======================================
  Coverage        ?   99.09%           
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  Files           ?        5           
  Lines           ?      333           
  Branches        ?       54           
=======================================
  Hits            ?      330           
  Misses          ?        3           
  Partials        ?        0           

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