OZG-6179 set nachrichten-manager version to snapshot

vorgang-manager-server/pom.xml

@@ -55,7 +55,7 @@
 		<user-manager-interface.version>2.1.0</user-manager-interface.version>
 		<bescheid-manager.version>1.16.0-SNAPSHOT</bescheid-manager.version>
 		<processor-manager.version>0.4.1</processor-manager.version>
-		<nachrichten-manager.version>2.10.0</nachrichten-manager.version>
+		<nachrichten-manager.version>2.11.0-SNAPSHOT</nachrichten-manager.version>
 		<ozgcloud-starter.version>0.10.0</ozgcloud-starter.version>
 		<notification-manager.version>2.9.0</notification-manager.version>