Scala steward configuration to keep our scala apps up to date.
This runs a github-action on a schedule and will raise PRs against repositories that the Wellcome Collection Scala Steward GitHub app has permissions to read from.
If you want to run this action against a non-default branch you can specify them in REPOSITORIES.md.
With appreciation for https://github.com/guardian/scala-steward-public-repos, from which this is copied.