Log Message:
py-httpx: updated to 0.18.2

0.18.2

Added

* Support for Python 3.10.
* Expose `httpx.USE_CLIENT_DEFAULT`, used as the default to `auth` and `timeout` \ 
parameters in request methods.
* Support [HTTP/2 "prior \ 
knowledge"](https://python-hyper.org/projects/hyper-h2/en/v2.3.1/negotiating-http2.html#prior-knowledge), \ 
using `httpx.Client(http1=False, http2=True)`.

Fixed

* Clean up some cases where warnings were being issued.
* Prefer Content-Length over Transfer-Encoding: chunked for \ 
content=<file-like> cases.