Fix parent version

Author: ryanjbaxter

spring-cloud-gateway-integration-tests/httpclient/pom.xml

@@ -16,7 +16,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-gateway-integration-tests</artifactId>
-		<version>4.1.8-SNAPSHOT</version>
+		<version>4.2.3-SNAPSHOT</version>
 		<relativePath>..</relativePath> <!-- lookup parent from repository -->
 	</parent>