Install setuptools and wheel for pip before test deps

Author: aiudirog

.github/workflows/tests.yml

@@ -46,6 +46,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install -U pip
+          python -m pip install -U setuptools wheel
           python -m pip install -U -r requirements.txt pytest-coverage codecov
       - name: Run Tests
         run: python -m pytest --cov=httpx_gssapi --cov-report=xml