Split off -core module.

Change-Id: I64d3c195db94e92da44c7e4971f5e85991ac30c8
diff --git a/example/pom.xml b/example/pom.xml
index c5c82b2..546a47c 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>eu.mulk.quarkus-googlecloud-jsonlogging</groupId>
     <artifactId>quarkus-googlecloud-jsonlogging-parent</artifactId>
-    <version>1.0.0-SNAPSHOT</version>
+    <version>3.1.4-SNAPSHOT</version>
   </parent>
 
   <artifactId>quarkus-googlecloud-jsonlogging-example</artifactId>