Updated release plugin version

pom.xml

@@ -382,7 +382,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-release-plugin</artifactId>
-                <version>2.0-beta-7</version>
+                <version>2.0-beta-9</version>
                 <configuration>
                     <tagBase>
                         https://src.springframework.org/svn/spring-security/tags