Description of problem:
Package python-zeep fails to build from source in Fedora Rawhide.

Version-Release number of selected component (if applicable):
4.3.1-2.fc42

Steps to Reproduce:
koji build --scratch f43 python-zeep-4.3.1-2.fc42.src.rpm

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/python-zeep

Reproducible: Always

Actual Results:
_______________________________ test_http_error ________________________________

httpx_mock = <pytest_httpx._httpx_mock.HTTPXMock object at 0x7f38b8203a80>

    @pytest.mark.requests
    @pytest.mark.asyncio
    async def test_http_error(httpx_mock: HTTPXMock):
>       transport = AsyncTransport()

tests/test_async_transport.py:67: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <zeep.transports.AsyncTransport object at 0x7f38b83139b0>, client = None
wsdl_client = None, cache = None, timeout = 300, operation_timeout = None
verify_ssl = True, proxy = None

    def __init__(
        self,
        client=None,
        wsdl_client=None,
        cache=None,
        timeout=300,
        operation_timeout=None,
        verify_ssl=True,
        proxy=None,
    ):
        if httpx is None:
            raise RuntimeError("The AsyncTransport is based on the httpx module")
    
        self._close_session = False
        self.cache = cache
>       self.wsdl_client = wsdl_client or httpx.Client(
            verify=verify_ssl,
            proxies=proxy,
            timeout=timeout,
        )
E       TypeError: Client.__init__() got an unexpected keyword argument 'proxies'