use junit5 annotation

patterns-modules/idd/src/test/java/com/baeldung/idd/HelpRequestServiceUnitTest.java

@@ -1,7 +1,7 @@
 package com.baeldung.idd;
 
 import org.assertj.core.api.Assertions;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.List;