chore: update codecov action to v5

[targos]

Tokenless uploads are supported again.

Refs: https://docs.codecov.com/docs/codecov-tokens#uploading-without-a-token

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.08%. Comparing base (e3e19b3) to head (6328162).
Report is 46 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #873      +/-   ##
==========================================
- Coverage   83.08%   80.08%   -3.00%     
==========================================
  Files          37       39       +2     
  Lines        4251     4676     +425     
==========================================
+ Hits         3532     3745     +213     
- Misses        719      931     +212     

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

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles