Upgraded test from junit 4 to junit 5

Author: mjk22071998

src/test/java/com/thealgorithms/datastructures/lists/SortedlinkedListTest.java

@@ -1,10 +1,10 @@
 package com.thealgorithms.datastructures.lists;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class SortedLinkedListTest {