Scala Steward GitHub Action

Version updated for scala-steward-org/scala-steward-action to version v2.70.0.

• This action is used across all versions by 920 repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

What’s Changed

Other Changes

• Fix README.md to run on ubuntu-latest and install sbt by @yokra9 in https://github.com/scala-steward-org/scala-steward-action/pull/644

Full Changelog: https://github.com/scala-steward-org/scala-steward-action/compare/v2.69.0...v2.70.0

• scala-steward-org
• GitHub Actions