update deps

fix retrofit 2.3.x compatibility, update 3rd party libs to latest minor version

build.gradle

@@ -53,12 +53,12 @@ dependencies {
   testCompile group: 'junit', name: 'junit', version: '4.12'
   testCompile group: 'com.squareup.okhttp', name: 'mockwebserver', version: '2.7.5'
 
-  compile 'com.squareup.retrofit2:converter-jackson:2.2.0'
-  compile 'com.squareup.retrofit2:retrofit:2.2.0'
-  compile 'com.squareup.okhttp3:logging-interceptor:3.7.0'
-  compile 'jakarta.xml.bind:jakarta.xml.bind-api:2.3.2'
-  compile 'org.glassfish.jaxb:jaxb-runtime:2.3.2'
-  compile 'com.auth0:java-jwt:3.10.2'
+  compile 'com.squareup.retrofit2:converter-jackson:2.11.0'
+  compile 'com.squareup.retrofit2:retrofit:2.11.0'
+  compile 'com.squareup.okhttp3:logging-interceptor:3.14.9'
+  compile 'jakarta.xml.bind:jakarta.xml.bind-api:2.3.3'
+  compile 'org.glassfish.jaxb:jaxb-runtime:2.3.9'
+  compile 'com.auth0:java-jwt:3.19.4'
 }
 
 javadoc {

src/main/java/com/plivo/api/PlivoClient.java

@@ -169,6 +169,7 @@ public PlivoClient(String authId, String authToken, OkHttpClient.Builder httpCli
           response = new Response.Builder()
             .request(chain.request())
             .code(204)
+            .message("No Content")
             .protocol(Protocol.HTTP_1_1)
             .body(ResponseBody.create(null, new byte[]{}))
             .build();