[minor] Update internal version number

stephane-caron · Stéphane Caron · commit e0986f7a4599 · 2022-09-28T14:05:50.000+02:00
diff --git a/robot_descriptions/__init__.py b/robot_descriptions/__init__.py
@@ -19,4 +19,4 @@
 Import open source robot description as Python modules.
 """
 
-__version__ = "0.5.0"
+__version__ = "0.6.0rc0"
