Update maven-site-plugin to 3.1 from 3.0.

Update findbugs-maven-plugin to 2.5.2 from 2.4.0.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1376611 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

pom.xml

@@ -215,7 +215,7 @@ limitations under the License.
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-site-plugin</artifactId>
-          <version>3.0</version>
+          <version>3.1</version>
           <dependencies>
             <dependency>
               <!-- add support for ssh/scp -->
@@ -286,7 +286,7 @@ limitations under the License.
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>findbugs-maven-plugin</artifactId>
-        <version>2.4.0</version>
+        <version>2.5.2</version>
       </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>