Log Message:
py-jupyter_core: updated to 4.7.1

4.7.1

- Allow creating user to delete secure file (:ghpull:`213`)

4.7.0

- Add a new ``JUPYTER_PREFER_ENV_PATH`` variable, which can be set to switch the \ 
order of the environment-level path and the user-level path in the Jupyter path \ 
hierarchy (e.g., ``jupyter --paths``). It is considered set if it is a value \ 
that is not one of 'no', 'n', 'off', 'false', '0', or '0.0' (case insensitive). \ 
If you are running Jupyter in multiple virtual environments as the same user, \ 
you will likely want to set this environment variable.
- Drop Python 2.x and 3.5 support, as they have reached end of life.
- Add Python 3.9 builds to testing, and expand testing to cover Windows, macOS, \ 
and Linux platforms.
- ``jupyter --paths --debug`` now explains the environment variables that affect \ 
the current path list.
- Update the file hidden check on Windows to use new Python features rather than \ 
ctypes directly.
- Add conda environment information in ``jupyter troubleshoot``.
- Update ``_version.version_info`` and ``_version.__version__`` to follow Python \ 
conventions.