chore(deps): update actions/checkout action to v4

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v3 -> v4
actions/checkout	action	major	v3.5.3 -> v4.0.0

---

Release Notes

actions/checkout (actions/checkout)

v4

Compare Source

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

---

Configuration

📅 Schedule: Branch creation - "before 3am on Monday" (UTC), 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 these updates 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

Merging #4134 (cdbba6d) into main (ba38804) will increase coverage by 0.01%.
The diff coverage is n/a.

❗ Current head cdbba6d differs from pull request most recent head 9ab3989. Consider uploading reports for the commit 9ab3989 to get more accurate results

@@            Coverage Diff             @@
##             main    #4134      +/-   ##
==========================================
+ Coverage   92.38%   92.40%   +0.01%     
==========================================
  Files         321      321              
  Lines        9290     9290              
  Branches     1974     1974              
==========================================
+ Hits         8583     8584       +1     
+ Misses        707      706       -1