* Fixes a utility method.
* a warning is now issued if trying to create a nested fake
filesystem with custom arguments
* fixed `fake_filesystem.add_package_metadata` that had never
worked correctly
* updated the package build-system minimum version to
setuptools v61.2 and higher
* Fixes interaction with pytest.
* fixed an interaction problem of `fs` with other pytest
fixtures (see #1200)
* fixed some warnings in tests (see #1190)
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-pyfakefs?expand=0&rev=58
