Update scalafmt-core to 3.9.1#310

scala-steward wants to merge 1 commit intospotify:mainspotify/big-data-rosetta-code:mainfrom

scala-steward:update/scalafmt-core-3.9.1scala-steward/big-data-rosetta-code:update/scalafmt-core-3.9.1Copy head branch name to clipboard