Bump black and blacken-docs to latest stable versions.
Bump black and blacken-docs to latest stable versions.

jaraco/calendra,jaraco/backports.functools_lru_cache,jaraco/jaraco.collections,jaraco/jaraco.functools,jaraco/jaraco.context,pwdyson/inflect.py,yougov/pmxbot,jaraco/jaraco.logging,jaraco/zipp,jazzband/inflect,jaraco/jaraco.classes,jaraco/jaraco.itertools,python/importlib_metadata,jaraco/tempora,jaraco/jaraco.path,jaraco/portend,yougov/pmxbot,jaraco/hgtools,jaraco/keyring,jaraco/irc,pytest-dev/pytest-runner,jaraco/jaraco.stream,jaraco/jaraco.text,yougov/pmxbot