Upgrade to Spring Integration 5.2.0.M2

Closes gh-16750

Author: snicoll

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -181,7 +181,7 @@
 		<!-- deprecated in favor of "spring-framework.version" -->
 		<spring.version>5.2.0.M2</spring.version>
 		<spring-amqp.version>2.2.0.M2</spring-amqp.version>
-		<spring-batch.version>4.2.0.M1</spring-batch.version>
+		<spring-batch.version>4.2.0.M2</spring-batch.version>
 		<spring-cloud-connectors.version>2.0.5.RELEASE</spring-cloud-connectors.version>
 		<spring-data-releasetrain.version>Moore-M4</spring-data-releasetrain.version>
 		<spring-framework.version>${spring.version}</spring-framework.version>