- update to 4.1:
* Add support for Python 3.12.
- drop support-python-312.patch (upstream)
- add py313.patch: fix test failures with 3.13

* Drop support for Python 2.6 and 3.2 and add support for
* BaseLoader is now an abstract class that cannot be
* Allow nan, inf and -inf values for floats in configurations.
* Scripts zconfig (for schema validation) and
* A new ZConfig.sphinx Sphinx extension facilitates
automatically documenting ZConfig components using their
description and examples in Sphinx documentation. See
* Simplify internal schema processing of max and min
* Almost all uses of type as a parameter name have been
replaced with type_ to avoid shadowing a builtin. These were
* Add ability to do variable substitution from environment