setup: Switch ws4py for websockets

This keeps `ws4py` as an optional dependency for tests, since we use it to tests backwards compatibility with user provided `ws4py` client objects.

Signed-off-by: hamistao <[email protected]>

setup.cfg

@@ -15,14 +15,14 @@ classifier =
     Programming Language :: Python :: 3
 
 [options]
-python_requires = >= 3.8
+python_requires = >= 3.9
 packages = find:
 install_requires =
     cryptography >= 3.2
     python-dateutil >= 2.4.2
     requests >= 2.20.0
     requests-toolbelt >= 0.8.0
-    ws4py != 0.3.5, >= 0.3.4  # 0.3.5 is broken for websocket support
+    websockets >= 14.0
 
 [options.extras_require]
 testing =
@@ -36,6 +36,7 @@ testing =
     # Python 3.12 no longer installs `setuptools` in venv
     # but mock-services depends on it for `pkg_resources`
     setuptools
+    ws4py >= 0.3.5
 format =
     black
     flake8