fix: update used FindImports constructor to not match inherited (#411)

Author: SimonVerhoeven

src/main/java/org/openrewrite/java/testing/junit5/UpdateTestAnnotation.java

@@ -43,7 +43,7 @@ public String getDescription() {
     public TreeVisitor<?, ExecutionContext> getVisitor() {
         return Preconditions.check(Preconditions.or(
                 new UsesType<>("org.junit.Test", false),
-                new FindImports("org.junit.Test").getVisitor()
+                new FindImports("org.junit.Test", null).getVisitor()
         ), new UpdateTestAnnotationVisitor());
     }