Prepare next development cycle for 3.0.3-SNAPSHOT

pom.xml

diff --git a/pom.xml b/pom.xml
index 46f540a..c554ef3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.eclipse</groupId>
     <artifactId>yasson</artifactId>
-    <version>3.0.2</version>
+    <version>3.0.3-SNAPSHOT</version>
     <packaging>jar</packaging>
     <name>Yasson</name>