Update setup.cfg

Author: wannaphong

setup.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 5.0.5-dev
+current_version = 5.0.6-dev
 commit = True
 tag = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<release>[a-z]+)(?P<build>\d+))?