change version t0 3.2.4

Author: xxo1shine

src/main/java/org/tron/program/Version.java

@@ -2,7 +2,7 @@
 
 public class Version {
 
-  private static final String version = "3.2.3";
+  private static final String version = "3.2.4";
 
   public static String getVersion() {
     return version;