[maven-release-plugin] prepare release robot-4.0.0

pom.xml

@@ -7,7 +7,7 @@
 	</parent>
 
 	<artifactId>robot</artifactId>
-	<version>3.5.3-SNAPSHOT</version>
+	<version>4.0.0</version>
 	<name>Robot Framework plugin</name>
 	<description>Shows Robot Framework test results in project</description>
 	<packaging>hpi</packaging>
@@ -44,7 +44,7 @@
 		<connection>scm:git:ssh://github.com/jenkinsci/robot-plugin.git</connection>
 		<developerConnection>scm:git:git@github.com:jenkinsci/robot-plugin.git</developerConnection>
 		<url>https://github.com/jenkinsci/robot-plugin</url>
-		<tag>HEAD</tag>
+		<tag>robot-4.0.0</tag>
 	</scm>
 	<dependencyManagement>
 		<dependencies>