Use Jupyter standard platformdirs

Warning:
```
DeprecationWarning: Jupyter is migrating its paths to use standard platformdirs given by the platformdirs library.  To remove this warning and see the appropriate new directories, set the environment variable JUPYTER_PLATFORM_DIRS=1 and then run jupyter --paths.
The use of platformdirs will be the default in jupyter_core v6
 from jupyter_core.paths import jupyter_data_dir
```