style: fix import

Author: alxkm

src/test/java/com/thealgorithms/strings/ValidParenthesesTest.java

@@ -4,9 +4,9 @@
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.CsvSource;
-import org.junit.jupiter.api.Test;
 
 public class ValidParenthesesTest {