Update generate-junit-reports.sc dependencies

Author: Gedochao

.github/scripts/generate-junit-reports.sc

@@ -1,7 +1,7 @@
 #!/usr/bin/env -S scala-cli shebang
 //> using scala 3
-//> using toolkit 0.2.1
-//> using dep org.scala-lang.modules::scala-xml:2.2.0
+//> using toolkit default
+//> using dep org.scala-lang.modules::scala-xml:2.3.0
 // adapted from https://github.com/vic/mill-test-junit-report
 import java.io.File
 import scala.collection.mutable.ArrayBuffer