Rename build minutes to pipeline minutes (!1644) · Merge requests · GitLab.org / GitLab · GitLab

What does this MR do?

Rename build minutes to pipeline minutes.

Does this MR meet the acceptance criteria?

Tests
- All builds are passing
Conform by the merge request performance guides
Conform by the style guides
Branch has no merge conflicts with master (if it does - rebase it please)
Squashed related commits together

What are the relevant issue numbers?

Closes #2139 (closed)