NocoBase v1.7.0-beta.15: Support to use variable for duration

🚀 Improvements

• [Workflow: Delay node] Support to use variable for duration (#6621) by @mytharcher

🐛 Bug Fixes

• [Workflow] Fix OOM when create job with unsafe integer id (#6637) by @mytharcher

• [Block: template] when the referenced template used by the page block has been deleted, saving as a template fails (#6638) by @gchust