Detect the new stage labels in `Gitlab::Danger::Teammate`
requested to merge 65312-use-group-labels-instead-of-legacy-team-labels-for-danger-picking-test-reviewers into master
What does this MR do?
This MR changes the label detection for TAE counterpart reviewer from the legacy team labels to the new stage labels.
Closes #65312 (closed).
Edited by Rémy Coutable