Increase endpoint integration test timeouts

Allow longer for test responses to be returned.

See gh-9316

Author: philwebb

Diff for: spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/AbstractWebEndpointIntegrationTests.java

@@ -63,7 +63,7 @@
  */
 public abstract class AbstractWebEndpointIntegrationTests<T extends ConfigurableApplicationContext> {
 
-	private static final Duration TIMEOUT = Duration.ofMinutes(2);
+	private static final Duration TIMEOUT = Duration.ofMinutes(6);
 
 	private final Class<?> exporterConfiguration;