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

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Release Notes

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

v4

Compare Source

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Configuration

📅 Schedule: Branch creation - "after 1pm and before 5pm on Friday" in timezone Asia/Tokyo, 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.

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• If you want to rebase/retry this PR, check this box

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 4.35%. Comparing base (20451a6) to head (9c1e6af).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##              main    #202   +/-   ##
=======================================
  Coverage     4.35%   4.35%           
  Complexity      15      15           
=======================================
  Files           73      73           
  Lines         3441    3441           
  Branches       445     445           
=======================================
  Hits           150     150           
  Misses        3279    3279           
  Partials        12      12           

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