fix jdk compatibility problem (#3249)

Fix jdk compatibility problem

spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/loadbalancer/NacosLoadBalancer.java

@@ -21,13 +21,12 @@ import java.util.List;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
-import javax.annotation.PostConstruct;
-
 import com.alibaba.cloud.commons.lang.StringUtils;
 import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
 import com.alibaba.cloud.nacos.balancer.NacosBalancer;
 import com.alibaba.cloud.nacos.util.InetIPv6Utils;
 import com.alibaba.nacos.client.naming.utils.CollectionUtils;
+import jakarta.annotation.PostConstruct;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import reactor.core.publisher.Mono;

spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

@@ -6,4 +6,4 @@ com.alibaba.cloud.nacos.discovery.reactive.NacosReactiveDiscoveryClientConfigura
 com.alibaba.cloud.nacos.discovery.configclient.NacosConfigServerAutoConfiguration
 com.alibaba.cloud.nacos.loadbalancer.LoadBalancerNacosAutoConfiguration
 com.alibaba.cloud.nacos.NacosServiceAutoConfiguration
-com.alibaba.cloud.nacos.utils.UtilIPv6AutoConfiguration
+com.alibaba.cloud.nacos.util.UtilIPv6AutoConfiguration