Increase sleep time in ScheduledATAITests

This commit increases the sleep time in
ScheduledAndTransactionalAnnotationIntegrationTests with the hope of
improving the robustness of the test suite on the CI build server.

src/test/java/org/springframework/scheduling/annotation/ScheduledAndTransactionalAnnotationIntegrationTests.java

@@ -69,7 +69,7 @@ public class ScheduledAndTransactionalAnnotationIntegrationTests {
 		ctx.register(Config.class, SubclassProxyTxConfig.class, RepoConfigA.class);
 		ctx.refresh();
 
-		Thread.sleep(10); // allow @Scheduled method to be called several times
+		Thread.sleep(50); // allow @Scheduled method to be called several times
 
 		MyRepository repository = ctx.getBean(MyRepository.class);
 		CallCountingTransactionManager txManager = ctx.getBean(CallCountingTransactionManager.class);
@@ -84,7 +84,7 @@ public class ScheduledAndTransactionalAnnotationIntegrationTests {
 		ctx.register(Config.class, JdkProxyTxConfig.class, RepoConfigB.class);
 		ctx.refresh();
 
-		Thread.sleep(30); // allow @Scheduled method to be called several times
+		Thread.sleep(50); // allow @Scheduled method to be called several times
 
 		MyRepositoryWithScheduledMethod repository = ctx.getBean(MyRepositoryWithScheduledMethod.class);
 		CallCountingTransactionManager txManager = ctx.getBean(CallCountingTransactionManager.class);