chore(deps): update codecov/codecov-action action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	major	v3 -> v4

---

Release Notes

codecov/codecov-action (codecov/codecov-action)

v4

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 ✅

Comparison is base (ffbc056) 73.19% compared to head (9eefeaa) 71.80%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #158      +/-   ##
============================================
- Coverage     73.19%   71.80%   -1.40%     
  Complexity      143      143              
============================================
  Files            32       32              
  Lines           582      532      -50     
  Branches         42       42              
============================================
- Hits            426      382      -44     
+ Misses          118      112       -6     
  Partials         38       38              

Flag	Coverage Δ
unittests	71.80% <ø> (-1.40%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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