update Endorse client version

Author: yaman

build.gradle

@@ -31,7 +31,7 @@ dependencies {
    // Java Simple Serial Connector 
     compile 'org.scream3r:jssc:2.8.0'
     compile 'com.google.code.gson:gson:2.8.2'
-    compile 'io.soracom:soracom-endorse-client-for-java:0.1.0'
+    compile 'io.soracom:soracom-endorse-client-for-java:0.2.0'
     compileOnly group: 'com.amazonaws', name: 'aws-java-sdk-sts', version: '1.11.358'
 
     testCompile 'junit:junit:4.12'