Update pythonpackage.yml

.github/workflows/pythonpackage.yml

@@ -17,10 +17,9 @@ jobs:
       uses: actions/setup-python@v1
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+    - name: Install package
       run: |
-        python -m pip install --upgrade pip
-        pip install -r requirements.txt
+        python setup.py install
     - name: Test with pytest
       run: |
         pip install pytest pytest-asyncio