[maven-release-plugin] prepare release v4.11.1

pom.xml

@@ -3,7 +3,7 @@
 
 	<groupId>org.icatproject</groupId>
 	<artifactId>icat.client</artifactId>
-	<version>4.11.1-SNAPSHOT</version>
+	<version>4.11.1</version>
 	<packaging>jar</packaging>
 	<name>ICAT Clients</name>
 	<description>Provides facilities to login to an ICAT instance after which one can create, read, update or delete entities according to your permissions. This includes a Java client using SOAP access as well as Python and Java clients using the REST interface of the icat.server.</description>
@@ -28,7 +28,7 @@
 		<connection>scm:git:https://github.com/icatproject/icat.client.git</connection>
 		<developerConnection>scm:git:https://github.com/icatproject/icat.client.git</developerConnection>
 		<url>https://github.com/icatproject/icat.client</url>
-		<tag>HEAD</tag>
+		<tag>v4.11.1</tag>
 	</scm>
 
 	<issueManagement>