Log Message:
py-propcache: updated to 0.2.1

0.2.1

Bug fixes

- Stopped implicitly allowing the use of Cython pre-release versions when
  building the distribution package
- Fixed ``wrapped`` and ``func`` not being accessible in the Cython versions of \ 
:func:`propcache.api.cached_property` and \ 
:func:`propcache.api.under_cached_property` decorators

Removals and backward incompatible breaking changes

- Removed support for Python 3.8 as it has reached end of life

Packaging updates and notes for downstreams

- Stopped implicitly allowing the use of Cython pre-release versions when
  building the distribution package