chore: calm down Scala Steward (#195)

Author: ennru

.scala-steward.conf

@@ -1,3 +1,6 @@
+// really slow dependency updates, please
+pullRequests.frequency = "90 days"
+
 updates.ignore = [
   // Releases after 1.7 require JDK 11
   // https://github.com/google/google-java-format/releases/tag/google-java-format-1.8

plugin/src/main/scala/com/lightbend/sbt/JavaFormatterPlugin.scala

@@ -100,7 +100,7 @@ object JavaFormatterPlugin extends AutoPlugin {
       compile / compileInputs := (compile / compileInputs).dependsOn(javafmtDoFormatOnCompile).value)
 
   def notToBeScopedSettings: Seq[Setting[_]] =
-    List(includeFilter in javafmt := "*.java")
+    List(javafmt / includeFilter := "*.java")
 
   private[this] val javafmtDoFormatOnCompile =
     taskKey[Unit]("Format Java source files if javafmtOnCompile is on.")