test: use poetry instead pipenv

.github/workflows/tests.yml

@@ -11,23 +11,26 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11']
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-        
-    - name: Install dependencies
+
+    - name: Install poetry
       run: |
         python -m pip install --upgrade pip
-        python -m pip install pipenv
-        pipenv install
-        
+        pip install poetry
+
+    - name: Install dependencies
+      run: |
+        poetry install
+
     - name: Run Unittest
       run: |
-        pipenv run python -m unittest discover tests/ --verbose
+        poetry run python -m unittest discover tests/ --verbose