Update pnpm/action-setup action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
pnpm/action-setup	action	major	v3.0.0 -> v4.0.0

---

Release Notes

pnpm/action-setup (pnpm/action-setup)

v4.0.0

Compare Source

---

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 and coverable lines are covered by tests ✅

Project coverage is 88.50%. Comparing base (00f7945) to head (dfd46e0).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8607   +/-   ##
=======================================
  Coverage   88.50%   88.50%           
=======================================
  Files         274      274           
  Lines       26938    26938           
=======================================
  Hits        23841    23841           
  Misses       3097     3097           

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