Upgrade to Spring AMQP 1.3.9.RELEASE

Closes gh-2453

spring-boot-dependencies/pom.xml

@@ -99,7 +99,7 @@
 		<solr.version>4.7.2</solr.version>
 		<spock.version>0.7-groovy-2.0</spock.version>
 		<spring.version>4.0.9.RELEASE</spring.version>
-		<spring-amqp.version>1.3.8.RELEASE</spring-amqp.version>
+		<spring-amqp.version>1.3.9.RELEASE</spring-amqp.version>
 		<spring-batch.version>3.0.2.RELEASE</spring-batch.version>
 		<spring-data-releasetrain.version>Dijkstra-SR5</spring-data-releasetrain.version>
 		<spring-hateoas.version>0.16.0.RELEASE</spring-hateoas.version>