Coverage updates are not hitting Codecov due to Github rate limiting

[amyspark]

Hey @dragonmux,

I just saw in #1 (build example here) that Codecov cannot figure out the repo that owns the upload we're sending:

[2023-01-11T15:08:28.408Z] ['info'] Pinging Codecov: https://codecov.io/upload/v4?package=github-action-3.1.1-uploader-0.3.2&token=*******&branch=work%2Famyspark%2Ffix-clang-deps&build=3894057590&build_url=https%3A%2F%2Fgithub.com%2Fmangrove-lang%2Fmangrove%2Factions%2Fruns%2F3894057590&commit=35a3d30ad22e6507afedfaa11a6ce9f48b8dc428&job=Build+Linux&pr=1&service=github-actions&slug=mangrove-lang%2Fmangrove&name=&tag=&flags=&parent=
[2023-01-11T15:08:28.754Z] ['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')}

This seems to be a known issue. I believe you need to set the token manually as detailed here.