Upgrade to Download Maven Plugin 1.4.2

Closes gh-18459

Author: snicoll

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

@@ -275,7 +275,7 @@
 				<plugin>
 					<groupId>com.googlecode.maven-download-plugin</groupId>
 					<artifactId>download-maven-plugin</artifactId>
-					<version>1.4.1</version>
+					<version>1.4.2</version>
 				</plugin>
 				<plugin>
 					<groupId>org.jetbrains.kotlin</groupId>