`__package__` is deprecated since Python 3.13, see
https://docs.python.org/3/reference/datamodel.html#module.__package__
`importlib.resources.files()` can be passed a non-package module
since Python 3.12 (or importlib-resources 5.10.0, see
https://importlib-resources.readthedocs.io/en/latest/history.html#v5-10-0 ),
so we can use `__name__` instead of `__package__`.
Also, I noticed that in lib/galaxy/config/__init__.py we are passing
a directory to `importlib.resources.as_file()`, which is supported
only since Python 3.12 (or importlib-resources 5.9.0).
For the reasons above:
- Update conditional imports in `lib/galaxy/util/resources.py` to
import from `importlib.resources` only for Python 3.12,
otherwise from the importlib-resources package.
- Update importlib-resources requirement in galaxy-util package.
- Drop importlib-resources requirement from galaxy-web-apps as it's
not imported directly from its code any more.
Nicola Soranzo