Disable CodeCov annotations in CI job

[orlera]

When running CodeCov patch check in CI, newly added lines not covered by any test are annotated in the Files changed tab.

This makes code reviewing quite a challenge, since the annotations break up the file and make it quite difficult to follow the code.
Since Codecov provides a report with detailed information about the coverage and how to improve it, I would propose to disable the check annotations as explained here in order to ease PR reviews.

[alecslupu]

I am in favor.

[oliverbarnes]

+1!

[mrcasals]

I'm in favor too! Here's a PR removing them: #7394

[mrcasals]

PR merged!

[beagleknight]

Let's do this! 👍