Log Message:
py-astroid: updated to 2.12.8

What's New in astroid 2.12.8?
=============================
* Fixed a crash in the ``dataclass`` brain for ``InitVars`` without subscript typing.
* Fixed parsing of default values in ``dataclass`` attributes.

What's New in astroid 2.12.7?
=============================
* Fixed a crash in the ``dataclass`` brain for uninferable bases.