make workflows install dev packages

.github/workflows/pytest.yml

@@ -11,14 +11,21 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
+
+      - name: Install Poetry
         run: |
           python -m pip install --upgrade pip
-          pip install .[dev]
-      - name: Test with pytest
+          pip install poetry
+
+      - name: Install dependencies
+        run: |
+          poetry install --with dev
+
+      - name: Run tests
         run: |
-          pytest
+          poetry run pytest