chore(HTTPOutput): update the version number

Author: squioc

pom.xml

@@ -14,7 +14,7 @@
 
     <groupId>com.plugin</groupId>
     <artifactId>graylog-plugin-http-output</artifactId>
-    <version>1.0.2-SNAPSHOT</version>
+    <version>1.0.3-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>${project.artifactId}</name>