[maven-release-plugin] prepare release dledger-0.2.4

Author: RongtongJin

pom.xml

@@ -27,7 +27,7 @@
 
     <groupId>io.openmessaging.storage</groupId>
     <artifactId>dledger</artifactId>
-    <version>0.2.4-SNAPSHOT</version>
+    <version>0.2.4</version>
 
     <name>openmessaging-dledger</name>