[maven-release-plugin] prepare release 3.9.0

Author: ci.automation

pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>org.camunda</groupId>
   <artifactId>camunda-release-parent</artifactId>
-  <version>3.9-SNAPSHOT</version>
+  <version>3.9.0</version>
   <packaging>pom</packaging>
   <name>camunda - Release Parent Pom</name>
 
@@ -387,7 +387,7 @@
     <url>https://github.com/camunda/camunda-release-parent</url>
     <connection>scm:git:[email protected]:camunda/camunda-release-parent.git</connection>
     <developerConnection>scm:git:[email protected]:camunda/camunda-release-parent.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>3.9.0</tag>
   </scm>
 
   <issueManagement>