split up CI steps for troubleshooting, update sphinx version

.github/workflows/build.yml

@@ -21,13 +21,17 @@ jobs:
         run: |
           pip3 install -U websockets asyncio
           python3 websocket/tests/echo-server.py &
-      - name: Build websocket-client & run tests
+      - name: Install build tools and print setuptools version
         run: |
           pip3 install -U pip setuptools wheel readme_renderer twine pytest python-socks
           python3 -c "import setuptools; print('Setup tools version'); print(setuptools.__version__)"
+      - name: Run tests
+        run: |
           pytest websocket/tests -v -rP
-          python3 setup.py sdist
-          twine check dist/*
         env:
           TEST_WITH_INTERNET: 1
           LOCAL_WS_SERVER_PORT: 8765
+      - name: Run distutils and confirm build of websocket-client
+        run: |
+          python3 setup.py sdist
+          twine check dist/*

setup.py

@@ -41,7 +41,7 @@
     extras_require={
         "test": ["websockets"],
         "optional": ["python-socks", "wsaccel"],
-        "docs": ["Sphinx >= 3.4", "sphinx_rtd_theme >= 0.5"],
+        "docs": ["Sphinx >= 6.0", "sphinx_rtd_theme >= 1.1.0"],
     },
     classifiers=[
         "Development Status :: 4 - Beta",