feat(version): update version to 4.7.3.1 (#5661)

Author: halibobo1205

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

@@ -4,7 +4,7 @@ public class Version {
 
   public static final String VERSION_NAME = "GreatVoyage-v4.7.2-140-g9d13f9cb69";
   public static final String VERSION_CODE = "18173";
-  private static final String VERSION = "4.7.3";
+  private static final String VERSION = "4.7.3.1";
 
   public static String getVersion() {
     return VERSION;