Do not vote for non-critical pipelines

CI has many pipelines; some of them only provide important info to the developer, but they're advisory by nature (they do not block the patch). EarlyWarningBot should only vote if the failure happened in a blocking pipeline.

For now, let's only vote for test, test-prio, test-wmf, gate-and-submit and gate-and-submit-wmf. Other pipelines can be added as-needed in the future.

Bug: T331236