Update tests and CI workflow configurations

Added `# noqa: E402` to `pyasstosrt` import in `conftest.py` to suppress import error warning. Revised GitHub Actions workflow for better readability and updated actions versions; streamlined Poetry setup, test execution, and coverage reporting.

.github/workflows/python-publish.yml

@@ -12,30 +12,36 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+
     steps:
-      - name: Check out repository
-        uses: actions/checkout@v3
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install Poetry
-        uses: snok/install-poetry@v1
-        with:
-          virtualenvs-create: true
-          virtualenvs-in-project: true
-          installer-parallel: true
-      - name: Install App Dependencies
-        run: poetry install --no-interaction --no-root
-      - name: Run tests
-        run: |
-          poetry run coverage run -m pytest
-          poetry run coverage report
-      - name: Upload coverage reports to Codecov
-        run: poetry run coveralls
-        env:
-          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install Poetry
+      uses: snok/install-poetry@v1
+      with:
+        version: 1.8.3
+        virtualenvs-create: true
+        virtualenvs-in-project: true
+
+    - name: Install dependencies
+      run: poetry install --no-interaction --no-root
+
+    - name: Run tests and collect coverage
+      run: |
+        source .venv/bin/activate
+        pytest --cov=pyasstosrt tests/ --cov-report=xml
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v4
+      with:
+        files: ./coverage.xml
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
   deploy:
     runs-on: ubuntu-latest

tests/conftest.py

@@ -5,7 +5,7 @@
 myPath = os.path.dirname(os.path.abspath(__file__))
 sys.path.insert(0, f'{myPath}/../')
 
-from pyasstosrt import Subtitle
+from pyasstosrt import Subtitle  # noqa: E402
 
 
 @pytest.fixture