[maven-release-plugin] prepare for next development iteration

pom.xml

@@ -33,7 +33,7 @@
   </parent>
 
   <artifactId>pollscm</artifactId>
-  <version>1.8</version>
+  <version>${revision}${changelist}</version>
   <packaging>hpi</packaging>
 
   <name>Jenkins Poll SCM plugin</name>
@@ -47,12 +47,12 @@
   <scm>
     <connection>scm:git:https://github.com/${gitHubRepo}</connection>
     <developerConnection>scm:git:[email protected]:${gitHubRepo}.git</developerConnection>
-    <tag>pollscm-1.8</tag>
+    <tag>${scmTag}</tag>
     <url>https://github.com/${gitHubRepo}</url>
   </scm>
 
   <properties>
-    <revision>1.8</revision>
+    <revision>1.9</revision>
     <changelist>-SNAPSHOT</changelist>
     <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
     <jenkins.baseline>2.452</jenkins.baseline>