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

[renovate]

This PR contains the following updates:

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

---

Release Notes

actions/cache (actions/cache)

v4

Compare Source

---

Configuration

📅 Schedule: Branch creation - "before 4am on Monday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ 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 ✅

Comparison is base (634f4f8) 100.00% compared to head (5143945) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #447   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          169       169           
  Branches        33        33           
=========================================
  Hits           169       169           

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