Adding safehttpx

[HeavyTony2]

Checklist

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[github-actions]

Hi! This is the staged-recipes linter and your PR looks excellent! 🚀

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/safehttpx/meta.yaml) and found it was in an excellent condition.

[HeavyTony2]

Is supposed to be compatible with 3.9 too, but
https://dev.azure.com/conda-forge/feedstock-builds/_build/results?buildId=1087699&view=logs&j=4cabe686-70ae-553a-7fd0-310379f2cbac&t=6a4fc7c9-c31a-5115-eff9-6479d72b69ff&l=910

import: 'safehttpx'
Traceback (most recent call last):
  File "/home/conda/staged-recipes/build_artifacts/safehttpx_1732226167030/test_tmp/run_test.py", line 2, in <module>
    import safehttpx
  File "/home/conda/staged-recipes/build_artifacts/safehttpx_1732226167030/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.9/site-packages/safehttpx/__init__.py", line 79, in <module>
    class AsyncSecureTransport(httpx.AsyncHTTPTransport):
  File "/home/conda/staged-recipes/build_artifacts/safehttpx_1732226167030/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.9/site-packages/safehttpx/__init__.py", line 88, in AsyncSecureTransport
    _timeout: float | None = None,
TypeError: unsupported operand type(s) for |: 'type' and 'NoneType'
WARNING: Tests failed for safehttpx-0.1.1-pyhff2d567_0.conda - moving package to /home/conda/staged-recipes/build_artifacts/broken

[HeavyTony2]

Already signaled the issue upstream gradio-app/safehttpx#5

[HeavyTony2]

@conda-forge/help-python, ready for review