Start building against Spring Batch snapshots for 4.1.0.RELEASE

See gh-14891

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

@@ -163,7 +163,7 @@
 		<!-- deprecated in favor of "spring-framework.version" -->
 		<spring.version>5.1.2.BUILD-SNAPSHOT</spring.version>
 		<spring-amqp.version>2.1.0.RELEASE</spring-amqp.version>
-		<spring-batch.version>4.1.0.RC1</spring-batch.version>
+		<spring-batch.version>4.1.0.BUILD-SNAPSHOT</spring-batch.version>
 		<spring-cloud-connectors.version>2.0.3.RELEASE</spring-cloud-connectors.version>
 		<spring-data-releasetrain.version>Lovelace-SR1</spring-data-releasetrain.version>
 		<spring-framework.version>${spring.version}</spring-framework.version>