- update to 2.15.3:
* Fix ``infer_call_result()`` crash on methods called
``with_metaclass()``
* Suppress ``UserWarning`` when finding module specs.

- update to 2.15.2:
* Support more possible usages of ``attrs`` decorators.
* Restore behavior of setting a Call as a base for classes
created using ``six.with_metaclass()``,
and harden support for using enums as metaclasses in this
case.
* 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.
* Fix ``are_exclusive`` function when a walrus operator is used
inside ``IfExp.test`` field.