Unit test coverage upload failed in CircleCI and reported invalid results for the coverage check

[gramidt]

Describe the bug
In #2385 I added third-party code in a directory that should have caused the code coverage check to fail, but it did not. My code passed the checks and was able to be merged. It turns out there was an error in the 'Upload unit test coverage step' and it didn't report it correctly ( https://app.circleci.com/pipelines/github/open-telemetry/opentelemetry-collector-contrib/9774/workflows/f6ca94b4-38be-459d-800f-d0658cb96918/jobs/81580/parallel-runs/0/steps/0-105 ).

Steps to reproduce
TBD

What did you expect to see?
The unit test coverage check should have failed.

What did you see instead?
All checks on the PR passed.

What version did you use?
'main' branch.

What config did you use?
N/A

Environment
N/A

Additional context

[gramidt]

@bogdandrutu - This issue is for tracking what happened with the code coverage check in #2385

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

[atoulme]

This is fixed, we now use Github actions.