[maven-release-plugin] prepare release openapi-diff-2.3.1

Author: ebracha

pom.xml

@@ -9,7 +9,7 @@
 
     <groupId>com.github.elibracha</groupId>
     <artifactId>openapi-diff</artifactId>
-    <version>2.3.1-SNAPSHOT</version>
+    <version>2.3.1</version>
     <packaging>jar</packaging>
 
     <name>openapi-diff</name>