py-ruamel-yaml: updated to 0.17.35

0.17.35
- support for loading dataclasses with ``InitVar`` variables (some
  special coding was necessary to get the, unexecpected, default value
  in the corresponding instance attribute ( example of usage in
  `this question <https://stackoverflow.com/q/77228378/1307905>`__ )

0.17.34
- Python 3.12 also loads C version when using `typ='safe'`
- initial support for loading invoking `__post_init__()` on dataclasses that have that method
  after loading a registered dataclass (`@yaml.register_class\n@dataclass\nclass ...`).

(adam)