Remove Reliance on 3rd party server for tests

[FoamyGuy]

one or more of the tests rely on httpbin.org in order to pass. They fail if that server is unresponsive during the request time, here is an example log of one such instance: https://github.com/adafruit/Adafruit_CircuitPython_Requests/actions/runs/18664231889/job/53211702649#step:2:1422

Ideally we should remove reliance on this 3rd party server from the test. Any tests that still rely on httbin should be converted to use: https://github.com/adafruit/Adafruit_CircuitPython_Requests/blob/main/tests/local_test_server.py and that simple server script can be expanded as needed to support anything our tests do.

[dhalbert]

We have http://wifitest.adafruit.com/testwifi/index.html and http://wifitest.adafruit.com/testwifi/sample.json as well.

[anecdata]

Might be nice to have an HTTPS option too.

[justmobilize]

I think on of them does a redirect (which is also a good test)

[FoamyGuy]

https://www.adafruit.com/api/quotes.php can be used to test https this returns a small JSON response.

redirect I think we can test with the simple server.

[justmobilize]

If we are up for using adafruit links, I know one of the main ones will redirect from http to https with a 3xx

[FoamyGuy]

@justmobilize it looks like the quotes one does:

[justmobilize]

Awesome!