<update>(project): update version to 3.2.3. (#812)

Author: kyonRay

build.gradle

@@ -35,7 +35,7 @@ ext {
 // integrationTest.mustRunAfter test
 allprojects {
     group = 'org.fisco-bcos.java-sdk'
-    version = '3.2.3-SNAPSHOT'
+    version = '3.2.3'
 
     apply plugin: 'maven-publish'
     apply plugin: 'idea'