fix: Fix import

Signed-off-by: Sun Yuhan <[email protected]>

Author: sunyuhan1998

memory/repository/spring-ai-model-chat-memory-repository-jdbc/src/main/java/org/springframework/ai/chat/memory/repository/jdbc/JdbcChatMemoryRepositoryDialect.java

@@ -17,6 +17,7 @@
 package org.springframework.ai.chat.memory.repository.jdbc;
 
 import java.sql.DatabaseMetaData;
+
 import javax.sql.DataSource;
 
 import org.springframework.jdbc.support.JdbcUtils;