Update scalafmt-core to 3.9.9 in series/3.x#1422

scala-steward wants to merge 3 commits intofd4s:series/3.xfd4s/fs2-kafka:series/3.xfrom

scala-steward:update/series/3.x/scalafmt-core-3.9.9scala-steward/fs2-kafka:update/series/3.x/scalafmt-core-3.9.9Copy head branch name to clipboard