Update actions/checkout action to v4

[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

• Support fetching without the --progress option
• Update to node20

---

Configuration

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

🚦 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 has been generated by Mend Renovate. View repository job log here.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (558c9d8) 49.02% compared to head (cd6e8a5) 49.02%.
Report is 3 commits behind head on main.

❗ Current head cd6e8a5 differs from pull request most recent head 3003bb8. Consider uploading reports for the commit 3003bb8 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #70   +/-   ##
=======================================
  Coverage   49.02%   49.02%           
=======================================
  Files          20       20           
  Lines         512      512           
=======================================
  Hits          251      251           
  Misses        261      261           

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