Release 6.0.0.

Change-Id: I2168c4d15dd03379a9c7e53b257be3e5b69b7b3b
diff --git a/pom.xml b/pom.xml
index f5dcd18..f2213f1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>eu.mulk.quarkus-googlecloud-jsonlogging</groupId>
-  <version>6.0.0-SNAPSHOT</version>
+  <version>6.0.0</version>
 
   <artifactId>quarkus-googlecloud-jsonlogging-parent</artifactId>
   <packaging>pom</packaging>