Add URL to Logs when Retrying

Currently, this section of the code https://github.com/zytedata/python-zyte-api/blob/main/zyte_api/aio/client.py#L62-L130 produces this DEBUG log when retrying errors:

[zyte_api.aio.retry] Retrying zyte_api.aio.client.AsyncClient.request_raw.<locals>.request in 7.430951650096189 seconds as it raised RequestError: RequestError: 520, message=, headers=<CIMultiDictProxy('Date': 'Tue, 19 Dec 2023 09:07:00 GMT', 'Content-Type': 'application/problem+json', 'Content-Length': '301', 'Connection': 'keep-alive', 'Retry-After': '60', 'Request-Id': '8dc64f033de37f442807c9d378c5044b', 'Vary': 'Accept-Encoding', 'Strict-Transport-Security': 'max-age=31536000; includeSubDomains; preload', 'Access-Control-Allow-Credentials': 'true', 'Access-Control-Expose-Headers': '*, X-Project-Key', 'Access-Control-Allow-Methods': 'GET, PUT, POST, DELETE, PATCH, OPTIONS', 'Access-Control-Allow-Headers': 'DNT, Keep-Alive, User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Type, Range, Authorization, X-Project-Key', 'Access-Control-Max-Age': '1728000')>, body=b'{"type":"/download/temporary-error","title":"Temporary Downloading Error","status":520,"detail":"There is a downloading problem which might be temporary. Retry in N seconds from \'Retry-After\' header or open a support ticket from https://support.zyte.com/support/tickets/new if it fails consistently."}', request_id=8dc64f033de37f442807c9d378c5044b.

Notice that the URL of the request in isn't logged here, but the header is.

Start in zyte_api/aio/client.py, especially the retry-related code at lines 62–130, and inspect how the DEBUG retry message is assembled. Update the log so it includes the request URL, then verify that retry messages contain the URL while retaining the existing error details.