* Add support for checking environment variables in zcml conditions. Use
envvar or not-envvar. not-envvar is true when the variable is not set,
is empty, or has one of the usual 'false' values like '0'.
* Add support for Python 3.12, 3.13.
* Drop support for Python 3.7.
- Switch to pyproject macros.
- No more greedy globs in %files.
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-zope.configuration?expand=0&rev=21
