update version

Author: ywy2090

build.gradle

@@ -40,7 +40,7 @@ ext {
 // integrationTest.mustRunAfter test
 allprojects {
     group = 'org.fisco-bcos.java-sdk'
-    version = '3.0.0-rc2-bugfix-SNAPSHOT'
+    version = '3.0.0-rc2-bugfix'
     apply plugin: 'maven-publish'
     apply plugin: 'idea'
     apply plugin: 'eclipse'