Update actions/checkout action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v4 -> v6

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Warning

Some dependencies could not be looked up. Check the warning logs for more information.

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

v5

Compare Source

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Configuration

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (4e36597) to head (34d8e98).
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Additional details and impacted files

@@          Coverage Diff          @@
##            main    #105   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files          1       1           
  Lines          7       7           
=====================================
  Misses         7       7           

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