[maven-release-plugin] prepare release v3.2.15

Author: KenChoi

pom.xml

@@ -3,7 +3,7 @@
 
 	<groupId>cn.jpush.api</groupId>
 	<artifactId>jpush-client</artifactId>
-	<version>3.2.15-SNAPSHOT</version>
+	<version>3.2.15</version>
 	<packaging>jar</packaging>
 	<url>https://github.com/jpush/jpush-api-java-client</url>
 	<name>JPush API Java Client</name>