Too described logging on transport level.

Hey there,
I think we have a problem here:
https://github.com/graphql-python/gql/blob/master/gql/transport/aiohttp.py#L333

We writes too many logs on info level.
Maybe we should log them only on debug level?

I know that it's possible to tune it on application level.
But still for me it's a real big surprise that gql library writes so many logs by default.


WDYT?