Update example-robot-data to 4.0.9

Author: htadashi

robot_descriptions/_repositories.py

@@ -88,7 +88,7 @@ class Repository:
     ),
     "example-robot-data": Repository(
         url="https://github.com/Gepetto/example-robot-data.git",
-        commit="9ba565ca1491efa92ebac38cdd499e5b1c256bf1",  # v4.0.3
+        commit="d0d9098d752014aec3725b07766962acf06c5418",  # v4.0.9
         cache_path="example-robot-data",
     ),
     "fanuc_m710ic_description": Repository(