Add TODO item for refurb

Author: jwilk

data/python.ini

@@ -169,3 +169,4 @@ command = check-manifest
 # TODO: https://github.com/ikamensh/flynt
 # TODO: https://github.com/econchick/interrogate
 # TODO: https://github.com/SourceCode-AI/aura
+# TODO: https://github.com/dosisod/refurb https://bugs.debian.org/1020950