Bump up gradle

Author: Hendry Zheng

xendit-java-lib/build.gradle

@@ -8,7 +8,7 @@ plugins {
 }
 
 group 'com.xendit'
-version '1.22.0'
+version '1.23.0'
 
 sourceCompatibility = 1.8
 

xendit-java-lib/src/main/java/com/xendit/Xendit.java

@@ -37,7 +37,7 @@ public String getXenditURL() {
     }
 
     public String getVersion() {
-      return "1.22.0";
+      return "1.23.0";
     }
   }
 }