[maven-release-plugin] prepare release v2.1.1

pom.xml

@@ -3,7 +3,7 @@
 
 	<groupId>org.vaulttec.sonarqube.auth.oidc</groupId>
 	<artifactId>sonar-auth-oidc-plugin</artifactId>
-	<version>2.1.1-SNAPSHOT</version>
+	<version>2.1.1</version>
 	<packaging>sonar-plugin</packaging>
 	<name>OpenID Connect Authentication for SonarQube</name>
 	<description>OpenID Connect Authentication for SonarQube</description>
@@ -48,7 +48,7 @@
 		<connection>scm:git:https://github.com/vaulttec/sonar-auth-oidc.git</connection>
 		<developerConnection>scm:git:git@github.com:vaulttec/sonar-auth-oidc.git</developerConnection>
 		<url>https://github.com/vaulttec/sonar-auth-oidc</url>
-		<tag>HEAD</tag>
+		<tag>v2.1.1</tag>
 	</scm>
 
 	<developers>