Log Message:
py-astroid: updated to 2.15.0

What's New in astroid 2.15.0?

* astroid now supports ``TryStar`` nodes from python 3.11 and should be fully \ 
compatible with python 3.11.

* ``Formattedvalue.postinit`` is now keyword only. This is to allow correct \ 
typing of the
  ``Formattedvalue`` class.

* ``Astroid`` now supports custom import hooks.

* ``astroid`` now infers return values from match cases.

* ``AstroidManager.clear_cache`` now also clears the inference context cache.

* ``Astroid`` now retrieves the default values of keyword only arguments and \ 
sets them on
  ``Arguments.kw_defaults``.

* ``Uninferable`` now has the type ``UninferableBase``. This is to facilitate \ 
correctly type annotating
  code that uses this singleton.

* Deprecate ``modutils.is_standard_module()``. It will be removed in the next \ 
minor release.
  Functionality has been replaced by two new functions,
  ``modutils.is_stdlib_module()`` and ``modutils.module_in_path()``.

* Fix ``are_exclusive`` function when a walrus operator is used inside \ 
``IfExp.test`` field.