Log Message:
py-astroid: updated to 2.5.7

What's New in astroid 2.5.7?

* Fix six.with_metaclass transformation so it doesn't break user defined \ 
transformations.
* Fix detection of relative imports.
* Fix inference of instance attributes defined in base classes
* Update `infer_named_tuple` brain to reject namedtuple definitions
  that would raise ValueError
* Do not set instance attributes on builtin object()
* Fix some spurious cycles detected in ``context.path`` leading to more cases
  that can now be inferred
* Add ``kind`` field to ``Const`` nodes, matching the structure of the built-in \ 
ast Const.
  The kind field is "u" if the literal is a u-prefixed string, and \ 
``None`` otherwise.
* Fix property inference in class contexts for properties defined on the metaclass
* Update enum brain to fix definition of __members__ for subclass-defined Enums
* Update random brain to fix a crash with inference of some sequence elements
* Fix inference of attributes defined in a base class that is an inner class
* Allow inferring a return value of None for non-abstract empty functions and
  functions with no return statements (implicitly returning None)
* scm_setuptools has been added to the packaging.
* Astroid's tags are now the standard form ``vX.Y.Z`` and not ``astroid-X.Y.Z`` \ 
anymore.
* Add initial support for Pattern Matching in Python 3.10