ros: update maintainer email

Author: jcarpent

package.xml

@@ -3,7 +3,7 @@
   <name>eigenpy</name>
   <version>1.5.3</version>
   <description>Bindings between Numpy and Eigen using Boost.Python</description>
-  <maintainer email="jcarpent@laas.fr">Justin Carpentier</maintainer>
+  <maintainer email="justin.carpentier@inria.fr">Justin Carpentier</maintainer>
   <maintainer email="[email protected]">Wolfgang Merkt</maintainer>
   <author>Justin Carpentier</author>
   <author>Nicolas Mansard</author>