Downgrade Wildfly to work around basic auth bug

As described in https://issues.redhat.com/browse/WFLY-15478, Wildfly
25.0.0.Final rejects all requests that use basic auth with a 401
response. 25.0.0.Final is, at the time of writing, the latest available
Wildfly Docker image so we need to downgrade to 24.0.0.Final.

Closes gh-28956

spring-boot-system-tests/spring-boot-deployment-tests/src/systemTest/java/org/springframework/boot/deployment/WildflyDeploymentTests.java

@@ -29,7 +29,7 @@
 class WildflyDeploymentTests extends AbstractDeploymentTests {
 
 	@Container
-	static WarDeploymentContainer container = new WarDeploymentContainer("jboss/wildfly:latest",
+	static WarDeploymentContainer container = new WarDeploymentContainer("jboss/wildfly:24.0.0.Final",
 			"/opt/jboss/wildfly/standalone/deployments", DEFAULT_PORT);
 
 	@Override