Restore Issue import

Author: steve-aom-elliott

rewrite-java-test/src/test/java/org/openrewrite/java/ChangePackageTest.java

@@ -18,7 +18,7 @@
 import org.intellij.lang.annotations.Language;
 import org.junit.jupiter.api.Test;
 import org.openrewrite.DocumentExample;
-
+import org.openrewrite.Issue;
 import org.openrewrite.SourceFile;
 import org.openrewrite.test.UncheckedConsumer;
 import org.openrewrite.java.marker.JavaSourceSet;