Update scalafmt-core to 3.9.9

Author: scala-steward

.scalafmt.conf

@@ -3,7 +3,7 @@
 # - better interop with default IntelliJ IDEA setup (matching import and modifiers sorting logic)
 # - better developer experience on laptop screens (like 16' MBPs) with IntelliJ IDEA (line wraps)
 
-version = 3.9.8
+version = 3.9.9
 
 runner.dialect = scala213source3
 fileOverride {