Make LongestIncreasingSubsequenceNLogN class final to prevent subclassing

Author: huseynovvusal

src/main/java/com/thealgorithms/dynamicprogramming/LongestIncreasingSubsequenceNLogN.java

@@ -6,7 +6,7 @@
  *
  * @author Vusal Huseynov (https://github.com/huseynovvusal)
  */
-public class LongestIncreasingSubsequenceNLogN {
+public final class LongestIncreasingSubsequenceNLogN {
     private LongestIncreasingSubsequenceNLogN() {
     }