Merge pull request #556 from typelevel/update/series/1.x/scalafmt-core-3.8.1

Update scalafmt-core to 3.8.1 in series/1.x

Author: sh0hei

.scalafmt.conf

@@ -1,3 +1,3 @@
-version = "3.8.0"
+version = "3.8.1"
 runner.dialect = scala213source3
 project.includePaths = [] # disables formatting