release: Update package.xml version to 1.1.0

package.xml

 <?xml version="1.0"?>
 <package>
   <name>simple_humanoid_description</name>
-  <version>0.1.0</version>
+  <version>1.1.0</version>
   <description>
     simple-humanoid URDF model and calibration data
   </description>