Update scalafmt setting. enforce new wildcard syntax

[xuwei-k]

fix Scala 3 warnings

[warn] -- Warning: /home/runner/work/sbt-native-packager/sbt-native-packager/src/main/scala/com/typesafe/sbt/PackagerPlugin.scala:100:38 
[warn] 100 |    def java_application: Seq[Setting[_]] =
[warn]     |                                      ^
[warn]     |`_` is deprecated for wildcard arguments of types: use `?` instead
[warn]     |This construct can be rewritten automatically under -rewrite -source 3.4-migration.
[warn] -- Warning: /home/runner/work/sbt-native-packager/sbt-native-packager/src/main/scala/com/typesafe/sbt/PackagerPlugin.scala:116:33 
[warn] 116 |    def java_server: Seq[Setting[_]] =
[warn]     |                                 ^
[warn]     |`_` is deprecated for wildcard arguments of types: use `?` instead
[warn]     |This construct can be rewritten automatically under -rewrite -source 3.4-migration.

[mzuehlke]

Shouldn't runner.dialectOverride.allowAsForImportRename = false prevent this ?