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

[renovate]

This PR contains the following updates:

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

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

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Configuration

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 2e56e92

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.42%. Comparing base (4a00563) to head (2e56e92).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2089      +/-   ##
==========================================
+ Coverage   90.97%   91.42%   +0.45%     
==========================================
  Files          94       94              
  Lines        3823     3826       +3     
  Branches      568      565       -3     
==========================================
+ Hits         3478     3498      +20     
+ Misses        331      317      -14     
+ Partials       14       11       -3     

see 5 files with indirect coverage changes

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