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

📅 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.

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

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This PR has been generated by Mend Renovate. View repository job log here.

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PR-Codex overview

This PR updates the codecov-action version in the GitHub Actions workflow file.

Detailed summary

• Upgraded codecov-action from version 3 to version 4.
• Updated the uses field in the workflow file to reference the new version.
• Added the file and fail_ci_if_error fields to the codecov-action configuration.

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[yegor256]

@rultor please, try to merge, since 8 checks have passed

[rultor]

@rultor please, try to merge, since 8 checks have passed

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor please, try to merge, since 8 checks have passed

@yegor256 Done! FYI, the full log is here (took me 8min)