[Backport 1.5.latest] Combine build verification jobs to avoid needing to upload and download artifacts (#1461)#1466

mikealfare merged 2 commits into1.5.latestdbt-labs/dbt-bigquery:1.5.latestfrom

backport-1461-to-1.5.latestdbt-labs/dbt-bigquery:backport-1461-to-1.5.latestCopy head branch name to clipboard