trigger-workflow-from-workflow

[maidh91]

Context

• bump deps PR does not trigger CI to run test because the create-pull-request action cannot trigger another workflow
• ref:
  • PRs created don't trigger other actions peter-evans/create-pull-request#48
  • https://github.com/peter-evans/create-pull-request/blob/main/docs/concepts-guidelines.md#triggering-further-workflow-runs

Summary

• the simplest way is to listen on ready-to-review event when switching a draft PR to a ready PR
• hence, create-pull-request will always create draft PR by default

#6
holepunchto/pear#447