fix(alibaba#12231): When inserting and updating configurations in the…

… database, the time-related field values need to be set using the time obtained from the database's built-in time function.

config/src/main/java/com/alibaba/nacos/config/server/service/repository/extrnal/ExternalConfigInfoTagPersistServiceImpl.java

@@ -48,7 +48,6 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.support.TransactionTemplate;
 
-import java.sql.Timestamp;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;