Replace the Codecov uploader with Node.js from Bash

[uhooi]

References

• https://about.codecov.io/blog/introducing-codecovs-new-uploader/
• https://github.com/codecov/uploader
• https://uploader.codecov.io/
• https://github.com/codecov/codecov-action
• https://twitter.com/the_uhooi/status/1403228437163110400?s=20

[github-actions[bot]]

👋 Thanks for reporting! Please PR :)