[Backport 1.6.latest] Combine build verification jobs to avoid needing to upload and download artifacts (#1461)#1467

mikealfare merged 2 commits into1.6.latestdbt-labs/dbt-bigquery:1.6.latestfrom

backport-1461-to-1.6.latestdbt-labs/dbt-bigquery:backport-1461-to-1.6.latestCopy head branch name to clipboard