updated plugins

git-svn-id: https://svn.apache.org/repos/asf/maven/pom/trunk@1404495 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 46e0b7b..cf1f939 100644
--- a/pom.xml
+++ b/pom.xml
@@ -160,7 +160,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-invoker-plugin</artifactId>
-          <version>1.6</version>
+          <version>1.7</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -178,7 +178,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-javadoc-plugin</artifactId>
-          <version>2.8.1</version>
+          <version>2.9</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -205,7 +205,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-resources-plugin</artifactId>
-          <version>2.5</version>
+          <version>2.6</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -227,7 +227,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-source-plugin</artifactId>
-          <version>2.1.2</version>
+          <version>2.2.1</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>