Use findbugs version defined in parent pom

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1681090 13f79535-47bb-0310-9956-ffa450edef68

Author: britter

pom.xml

@@ -339,7 +339,7 @@ file comparators, endian transformation classes, and much more.
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>findbugs-maven-plugin</artifactId>
-        <version>2.5.5</version>
+        <version>${commons.findbugs.version}</version>
         <configuration>
           <threshold>Normal</threshold>
           <effort>Default</effort>