Try installing all test dependencies in github actions environment

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install pytest pytest-copie tox
+          python -m pip install -r requirements.txt
 
       - name: Test
         uses: aganders3/headless-gui@v1