deps: update codecov/codecov-action action to v4

[renovate[bot]]

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`](https://togithub.com/codecov/codecov-action/compare/v3...v4) [Compare Source](https://togithub.com/codecov/codecov-action/compare/v3...v4)

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Configuration

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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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

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[renovate[bot]]

Edited/Blocked Notification

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You can manually request rebase by checking the rebase/retry box above.

⚠ Warning: custom changes will be lost.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (06c9b48) 29.64% compared to head (c0e3591) 29.64%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #148 +/- ## ======================================= Coverage 29.64% 29.64% ======================================= Files 11 11 Lines 651 651 ======================================= Hits 193 193 Misses 433 433 Partials 25 25 ```

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