Upgrade to Spring AMQP 1.6.7.RELEASE

Closes gh-8033

Author: snicoll

spring-boot-dependencies/pom.xml

@@ -146,7 +146,7 @@
 		<solr.version>5.5.3</solr.version>
 		<spock.version>1.0-groovy-2.4</spock.version>
 		<spring.version>4.3.5.RELEASE</spring.version>
-		<spring-amqp.version>1.6.6.RELEASE</spring-amqp.version>
+		<spring-amqp.version>1.6.7.RELEASE</spring-amqp.version>
 		<spring-cloud-connectors.version>1.2.3.RELEASE</spring-cloud-connectors.version>
 		<spring-batch.version>3.0.7.RELEASE</spring-batch.version>
 		<spring-data-releasetrain.version>Hopper-SR6</spring-data-releasetrain.version>