Fix MongoStepExecutionDao::getLastStepExecution

Closes GH-4896

Signed-off-by: Yanming Zhou <zhouyanming@gmail.com>

Author: quaff

spring-batch-core/src/main/java/org/springframework/batch/core/repository/dao/mongodb/MongoStepExecutionDao.java

@@ -36,6 +36,7 @@
 
 /**
  * @author Mahmoud Ben Hassine
+ * @author Yanming Zhou
  * @since 5.2.0
  */
 public class MongoStepExecutionDao implements StepExecutionDao {
@@ -114,7 +115,7 @@ public StepExecution getLastStepExecution(JobInstance jobInstance, String stepNa
 		Optional<org.springframework.batch.core.repository.persistence.StepExecution> lastStepExecution = stepExecutions
 			.stream()
 			.filter(stepExecution -> stepExecution.getName().equals(stepName))
-			.min(Comparator
+			.max(Comparator
 				.comparing(org.springframework.batch.core.repository.persistence.StepExecution::getCreateTime)
 				.thenComparing(org.springframework.batch.core.repository.persistence.StepExecution::getId));
 		if (lastStepExecution.isPresent()) {