update a new version. version name:GreatVoyage-v4.7.4-44-g8720e06a6,version code:18306

Author: halibobo1205

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

@@ -2,8 +2,8 @@
 
 public class Version {
 
-  public static final String VERSION_NAME = "GreatVoyage-v4.7.3.1-78-ge84a9e778";
-  public static final String VERSION_CODE = "18260";
+  public static final String VERSION_NAME = "GreatVoyage-v4.7.4-44-g8720e06a6";
+  public static final String VERSION_CODE = "18306";
   private static final String VERSION = "4.7.5";
 
   public static String getVersion() {