Fix compiler-project/semantic-errors

Java 21 emits Info about annotation processing, hence we need to filter out Infos so val first is the first non-info problem

sbt-app/src/sbt-test/compiler-project/semantic-errors/build.sbt

@@ -1,7 +1,7 @@
 TaskKey[Unit]("checkJavaFailures") := {
   val reporter = savedReporter.value
   val ignore = (compile in Compile).failure.value
-  val ps = reporter.problems
+  val ps = reporter.problems.filter(_.severity() != xsbti.Severity.Info)
   assert(!ps.isEmpty, "Failed to report any problems!")
   // First error should be on a specific line/file
   val first = ps(0)