Release 3.1.3.

This is a rerelease of 3.1.2 with Javadocs in English.

Change-Id: I2590703346044e607c828363b2d2387fca6a0028
diff --git a/pom.xml b/pom.xml
index 5cd0527..cfd60ba 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>eu.mulk.quarkus-googlecloud-jsonlogging</groupId>
-  <version>3.1.3-SNAPSHOT</version>
+  <version>3.1.3</version>
 
   <artifactId>quarkus-googlecloud-jsonlogging-parent</artifactId>
   <packaging>pom</packaging>