tools: keep PR titles/description up-to-date
requested to merge github/fork/tniessen/tools-pr-titles-description-update-pull-request-title-and-body into main
Set the update-pull-request-title-and-body
option when potentially updating an existing PR with a dynamic title and/or description.
Refs: https://github.com/nodejs/node/pull/47482#issuecomment-1514675158