Upgrade to Spring Cloud Connectors 1.2.9.RELEASE

Closes gh-17669

Author: snicoll

spring-boot-dependencies/pom.xml

@@ -154,7 +154,7 @@
 		<spock.version>1.0-groovy-2.4</spock.version>
 		<spring.version>4.3.25.BUILD-SNAPSHOT</spring.version>
 		<spring-amqp.version>1.7.14.BUILD-SNAPSHOT</spring-amqp.version>
-		<spring-cloud-connectors.version>1.2.8.RELEASE</spring-cloud-connectors.version>
+		<spring-cloud-connectors.version>1.2.9.RELEASE</spring-cloud-connectors.version>
 		<spring-batch.version>3.0.10.RELEASE</spring-batch.version>
 		<spring-data-releasetrain.version>Ingalls-BUILD-SNAPSHOT</spring-data-releasetrain.version>
 		<spring-hateoas.version>0.23.0.RELEASE</spring-hateoas.version>