Bumping version to 2.4-SNAPSHOT

Change-Id: I1f30b30740d85a44516f5a6993c17d35f83b6ec3
diff --git a/serializers/utils/pom.xml b/serializers/utils/pom.xml
index abdd1b9..8cc0994 100644
--- a/serializers/utils/pom.xml
+++ b/serializers/utils/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-yang-serializers</artifactId>
-        <version>2.3.1</version>
+        <version>2.4-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>