Added Setter for the class Student courses

src/main/java/org/example/Student.java

@@ -59,6 +59,10 @@ public class Student {
         return courses;
     }
 
+    public void setCourses(List<Course> courses) {
+        this.courses = courses;
+    }
+
     /**
      * Prints the basic information of the student in the console.
      * This methods displays the student´s ID, name and role, providing a quick overview of the student´s identity