SIVA-821 Update digidoc4j version to 6.0.0

Author: ivoMattus

validation-services-parent/pom.xml

@@ -34,7 +34,7 @@
     </modules>
 
     <properties>
-        <digidoc4j.version>6.0.0-RC.1</digidoc4j.version>
+        <digidoc4j.version>6.0.0</digidoc4j.version>
     </properties>
 
     <dependencyManagement>