feat: define graph as final

Signed-off-by: Otavio Santana <[email protected]>

jnosql-tinkerpop/src/main/java/org/eclipse/jnosql/databases/tinkerpop/mapping/configuration/GraphSupplier.java

@@ -32,7 +32,7 @@
 @ApplicationScoped
 class GraphSupplier implements Supplier<Graph> {
 
-    public static Logger LOGGER = Logger.getLogger(GraphSupplier.class.getName());
+    public static final Logger LOGGER = Logger.getLogger(GraphSupplier.class.getName());
 
     @SuppressWarnings("unchecked")
     @Override