[maven-release-plugin] prepare release parent-pom-16

pom.xml

diff --git a/pom.xml b/pom.xml
index 8926302..37500e0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,7 +30,7 @@
 
   <groupId>org.apache.uima</groupId>
   <artifactId>parent-pom</artifactId>
-  <version>16-SNAPSHOT</version>
+  <version>16</version>
   <packaging>pom</packaging>
 
   <name>Apache UIMA ${project.artifactId}</name>
@@ -76,7 +76,7 @@
     <connection>scm:git:https://github.com/apache/uima-parent-pom</connection>
     <developerConnection>scm:git:https://github.com/apache/uima-parent-pom</developerConnection>
     <url>https://github.com/apache/uima-parent-pom</url>
-    <tag>HEAD</tag>
+    <tag>parent-pom-16</tag>
   </scm>
 
   <issueManagement>