Log Message:
py-project-api: updated to 1.6.1

v1.6.1 - (2023-08-29)
---------------------
- Fix :meth:`pyproject_api.Frontend.metadata_from_built` only extracts one of \ 
the dist info files.

v1.6.0 - (2023-08-29)
---------------------
- Remove ``build_<wheel|editable>`` from \ 
``prepare_metadata_for_build_<wheel|editable>`` to allow separate config
  parametrization and instead add \ 
:meth:`pyproject_api.Frontend.metadata_from_built` the user can call when the \ 
prepare
  fails. Pass ``None`` for ``metadata_directory`` for such temporary wheel builds.