add "updates.includeScala = true" setting (#1090)
add "updates.includeScala = true" setting (#1090)

https://github.com/scala-steward-org/scala-steward/blob/011d5f32dca9d7c3c28b02c11bbc63e7934e46e9/docs/repo-specific-configuration.md

Co-authored-by: Julien Truffaut <779535a9096b396ef98783da6f5644373f5a0dc0@gmail.com>
julien-truffaut/Monocle