chore: Update codecov/codecov-action action to v5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	major	v4 -> v5

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Release Notes

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

v5

Compare Source

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Configuration

📅 Schedule: Branch creation - "before 9am on Saturday every 1 month" in timezone Europe/Berlin, Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, 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 17.63%. Comparing base (c576886) to head (888dc24).
Report is 1 commits behind head on main.

Additional details and impacted files

@@              Coverage Diff              @@
##               main     #244       +/-   ##
=============================================
- Coverage     97.45%   17.63%   -79.83%     
+ Complexity      142       17      -125     
=============================================
  Files            27       27               
  Lines           669      669               
  Branches         24       24               
=============================================
- Hits            652      118      -534     
- Misses            6      549      +543     
+ Partials         11        2        -9     

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