chore(deps): update actions/checkout action to v6

[renovate]

This PR contains the following updates:

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

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Release Notes

actions/checkout (actions/checkout)

v6.0.1

Compare Source

v6.0.0

Compare Source

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

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♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.54%. Comparing base (2c0bdcc) to head (e19541e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1229   +/-   ##
=======================================
  Coverage   79.54%   79.54%           
=======================================
  Files          57       57           
  Lines        3828     3828           
=======================================
  Hits         3045     3045           
  Misses        638      638           
  Partials      145      145           

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