- update to 2.2.3 (bsc#1208283, CVE-2023-25577):
* Ensure that URL rules using path converters will redirect
with strict slashes when the trailing slash is missing.
* Type signature for ``get_json`` specifies that return type
is not optional when ``silent=False``.
* ``parse_content_range_header`` returns ``None`` for a value
like ``bytes */-1`` where the length is invalid, instead of
raising an ``AssertionError``.
* Address remaining ``ResourceWarning`` related to the socket
used by ``run_simple``.
* Remove ``prepare_socket``, which now happens when
creating the server.
* Update pre-existing headers for ``multipart/form-data``
requests with the test client.
* Fix handling of header extended parameters such that they
are no longer quoted.
* ``LimitedStream.read`` works correctly when wrapping a
stream that may not return the requested size in one
``read`` call.
* A cookie header that starts with ``=`` is treated as an
empty key and discarded, rather than stripping the leading ``==``.
* Specify a maximum number of multipart parts, default 1000,
after which a ``RequestEntityTooLarge`` exception is
raised on parsing. This mitigates a DoS attack where a
larger number of form/file parts would result in disproportionate
resource use.