[maven-release-plugin] prepare release cachefilter-2.3.1

Author: samaxes

pom.xml

@@ -10,7 +10,7 @@
 
     <groupId>com.samaxes.filter</groupId>
     <artifactId>cachefilter</artifactId>
-    <version>2.3.1-SNAPSHOT</version>
+    <version>2.3.1</version>
     <packaging>jar</packaging>
 
     <name>Java EE Cache Filter</name>