OZG-5031 increase user manager dependency

vorgang-manager-server/pom.xml

@@ -52,7 +52,7 @@
 		<ozgcloud.license.version>1.3.0</ozgcloud.license.version>
 		<zufi-manager-interface.version>1.4.0-SNAPSHOT</zufi-manager-interface.version>
 
-		<user-manager-interface.version>2.1.0</user-manager-interface.version>
+		<user-manager-interface.version>2.9.0-SNAPSHOT</user-manager-interface.version>
 		<bescheid-manager.version>1.18.0-SNAPSHOT</bescheid-manager.version>
 		<processor-manager.version>0.4.1</processor-manager.version>
 		<nachrichten-manager.version>2.12.0-SNAPSHOT</nachrichten-manager.version>