Uploading reports to codecov.io fails

[oSoMoN]

This seems to be failing consistently, at least on pushes to branches in my fork and in PRs.

See e.g. https://github.com/uutils/diffutils/actions/runs/8620214427/job/23626651978?pr=52 :

[2024-04-09T18:03:30.811Z] ['error'] There was an error running the uploader: Error uploading to [https://codecov.io:](https://codecov.io/) Error: There was an error fetching the storage URL during POST: 404 - {'detail': ErrorDetail(string='Unable to locate build via Github Actions API. Please upload with the Codecov repository upload token to resolve issue.', code='not_found')}

Could it be that the upload token has expired?

[sylvestre]

I added the token

[oSoMoN]

This appears to have worked for the test coverage of #52, but not for the latest run of #33.

[oSoMoN]

This is also failing when running the coverage workflow on main now: https://github.com/uutils/diffutils/actions/runs/8709074333/job/23887954052.

[oSoMoN]

It looks like the update to version 4 of the Codecov action (#9), together with the addition of the token as a secret, fixed the problem.