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

pom.xml

@@ -11,7 +11,7 @@
 
     <groupId>io.jenkins.plugins</groupId>
     <artifactId>bitbucket-push-and-pull-request</artifactId>
-    <version>3.1.0</version>
+    <version>3.1.1-SNAPSHOT</version>
     <packaging>hpi</packaging>
 
     <properties>
@@ -218,7 +218,7 @@
         <connection>scm:git:https://github.com/jenkinsci/${project.artifactId}-plugin.git</connection>
         <developerConnection>scm:git:[email protected]:jenkinsci/${project.artifactId}-plugin.git</developerConnection>
         <url>https://github.com/jenkinsci/${project.artifactId}-plugin</url>
-        <tag>bitbucket-push-and-pull-request-3.1.0</tag>
+        <tag>bitbucket-push-and-pull-request-3.0.3</tag>
     </scm>
 
     <repositories>