Merge pull request #60 from nehbehl/patch-48

Update MessageService.java

udacity-jwdnd-c1-l3-final-review-solution-master/src/main/java/com/udacity/jwdnd/c1/review/service/MessageService.java

@@ -4,7 +4,7 @@
 import com.udacity.jwdnd.c1.review.model.ChatMessage;
 import org.springframework.stereotype.Service;
 
-import javax.annotation.PostConstruct;
+import jakarta.annotation.PostConstruct;
 import java.util.ArrayList;
 import java.util.List;