Update actions/checkout action to v4 - autoclosed

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v3 -> v4

---

Release Notes

actions/checkout (actions/checkout)

v4

Compare Source

• url-helper.ts now leverages well-known environment variables by @​jww3 in https://github.com/actions/checkout/pull/1941
• Expand unit test coverage for isGhes by @​jww3 in https://github.com/actions/checkout/pull/1946

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - Between 12:00 AM and 03:59 AM ( * 0-3 * * * ) (UTC).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (10d8e33) 95.19% compared to head (6a62345) 95.19%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #35   +/-   ##
=========================================
  Coverage     95.19%   95.19%           
  Complexity     1067     1067           
=========================================
  Files           242      242           
  Lines          2766     2766           
  Branches         51       51           
=========================================
  Hits           2633     2633           
  Misses          126      126           
  Partials          7        7           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.19%. Comparing base (f544e7c) to head (1f0f387).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #35   +/-   ##
=========================================
  Coverage     95.19%   95.19%           
  Complexity     1067     1067           
=========================================
  Files           242      242           
  Lines          2766     2766           
  Branches         51       51           
=========================================
  Hits           2633     2633           
  Misses          126      126           
  Partials          7        7           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.