Upgrade to Spring Cloud Connectors 1.2.3.RELEASE

Closes gh-6315

Author: wilkinsona

spring-boot-dependencies/pom.xml

@@ -130,7 +130,7 @@
 		<spock.version>1.0-groovy-2.4</spock.version>
 		<spring.version>4.2.7.BUILD-SNAPSHOT</spring.version>
 		<spring-amqp.version>1.5.6.RELEASE</spring-amqp.version>
-		<spring-cloud-connectors.version>1.2.2.RELEASE</spring-cloud-connectors.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>Gosling-SR4</spring-data-releasetrain.version>
 		<spring-hateoas.version>0.19.0.RELEASE</spring-hateoas.version>