update version of java-sdk (#290)

Author: cyjseagull

build.gradle

@@ -24,7 +24,7 @@ ext {
     nettySMSSLContextVersion = "1.2.0"
     toml4jVersion = "0.7.2"
     bcprovJDK15onVersion = "1.60"
-    keyMiniToolkit = "1.0.3-SNAPSHOT"
+    keyMiniToolkit = "1.0.3"
 
     slf4jVersion = "1.7.30"
     junitVersion = "4.12"
@@ -36,7 +36,7 @@ ext {
 // integrationTest.mustRunAfter test
 allprojects {
     group = 'org.fisco-bcos.java-sdk'
-    version = '2.7.2-SNAPSHOT'
+    version = '2.7.2'
     apply plugin: 'maven'
     apply plugin: 'maven-publish'
     apply plugin: 'idea'