⬆️ Update actions/checkout action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v5.0.1 -> v6.0.0

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Release Notes

actions/checkout (actions/checkout)

v6.0.0

Compare Source

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.38%. Comparing base (3e8e959) to head (69ea76d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #184   +/-   ##
=======================================
  Coverage   98.38%   98.38%           
=======================================
  Files           7        7           
  Lines         309      309           
  Branches       21       21           
=======================================
  Hits          304      304           
  Misses          4        4           
  Partials        1        1           

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