add release note

Author: MarcoGorelli

doc/source/whatsnew/v1.3.0.rst

@@ -611,6 +611,7 @@ Other API changes
 - Partially initialized :class:`CategoricalDtype` (i.e. those with ``categories=None`` objects will no longer compare as equal to fully initialized dtype objects.
 - Accessing ``_constructor_expanddim`` on a :class:`DataFrame` and ``_constructor_sliced`` on a :class:`Series` now raise an ``AttributeError``. Previously a ``NotImplementedError`` was raised (:issue:`38782`)
 - Added new ``engine`` and ``**engine_kwargs`` parameters to :meth:`DataFrame.to_sql` to support other future "SQL engines". Currently we still only use ``SQLAlchemy`` under the hood, but more engines are planned to be supported such as ``turbodbc`` (:issue:`36893`)
+- Calling ``hash`` on a :class:`Series`, :class:`DataFrame`, :class:`Index`, or :class:`ExtensionArray` will now raise ``TypeError`` with the built-in error message (e.g. `unhashable type: 'Series'`). Previously it would raise a custom message such as "'Series' objects are mutable, thus they cannot be hashed" (:issue:`40013`)
 
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