* drop formal support for python 3.8
* use get_file_type to open _pyio file types
* update rtfd to 3.12 and docs requirements
* formal support for 3.14; init support for 3.15
* dict and weakref descriptors are singletons in 3.15
* sync with rtd 15.4.1
* ensure valid class qualname in getsource
* avoid numpy segfault for 3.15.0a3
* update copyright for 2026, urllib3 to 2.6.0
- Drop patch fix-contextvars.patch, merged upstream.
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-dill?expand=0&rev=45
