Update version to 1.0.4-beta in pom.xml

Author: reeshika-h

pom.xml

@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.contentstack.sdk</groupId>
     <artifactId>marketplace</artifactId>
-    <version>1.0.3</version>
+    <version>1.0.4-beta</version>
     <description>Contentstack Java Management SDK for Content Management API</description>
     <url>https://github.com/contentstack/contentstack-management-java/</url>