[maven-release-plugin] prepare release 6.15.0 [no ci]

Author: kokuwaio-bot

pom.xml

@@ -10,7 +10,7 @@
 	</parent>
 
 	<artifactId>helm-maven-plugin</artifactId>
-	<version>6.15.0-SNAPSHOT</version>
+	<version>6.15.0</version>
 	<packaging>maven-plugin</packaging>
 
 	<name>Helm Maven Plugin</name>
@@ -63,7 +63,7 @@
 		<url>https://github.com/kokuwaio/helm-maven-plugin</url>
 		<connection>scm:git:https://github.com/kokuwaio/helm-maven-plugin.git</connection>
 		<developerConnection>scm:git:https://github.com/kokuwaio/helm-maven-plugin.git</developerConnection>
-		<tag>HEAD</tag>
+		<tag>6.15.0</tag>
 	</scm>
 	<issueManagement>
 		<system>github</system>