Fail when author pushes new code should check if the user is not a fellow

[Bullrich]

The changed introduced in #76 has an error.

The system should check if the user is not a fellow.

The following change should be done in review-trigger.yml

+           !contains(steps.fellows.outputs.github-handles, github.event.pull_request.user.login)
-           contains(steps.fellows.outputs.github-handles, github.event.pull_request.user.login)

Skip high ranking fellow

A new requirement to introduce with this fix is that it should skip the check if the author is rank 3 or higher.

[Bullrich]

Solved in #369