Update dledger version to 0.2.4

Author: RongtongJin

store/pom.xml

@@ -31,7 +31,7 @@
         <dependency>
             <groupId>io.openmessaging.storage</groupId>
             <artifactId>dledger</artifactId>
-            <version>0.2.3</version>
+            <version>0.2.4</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.apache.rocketmq</groupId>