Fix py-utils package version (#156)

Signed-off-by: Raul Sanchez-Mateos <raul@eprosima.com>

Author: rsanchez15

py_utils/package.xml

@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>py_utils</name>
-  <version>1</version>
+  <version>1.5.1</version>
   <description>
      *eprosima* Dev Utils Module is a Python implementation for some generic utils methods and classes.
   </description>