fix github workflow

.github/workflows/main.yml

@@ -19,20 +19,20 @@ jobs:
   test:
     strategy:
       matrix:
-        pyversion: [3.6, 3.7, 3.8, 3.9, "3.10"]
+        pyversion: ["3.8", "3.9", "3.10"]
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
-      - name: Setup Python
-        uses: actions/setup-python@v2.2.2
+      - uses: actions/checkout@v6
+      - name: Setup Python ${{ matrix.pyversion }}
+        uses: actions/setup-python@v5
         with:
            # Version range or exact version of a Python version to use, using SemVer's version range syntax.
            python-version: ${{ matrix.pyversion }} # optional, default is 3.x
       # Runs a set of commands using the runners shell
       - name: Run tests
         run: |
-          python -m pip install --upgrade pip
-          python setup.py test
+          pip install pytest
+          pytest tests/