python-app: update workflow

.github/workflows/python-app.yml

@@ -19,23 +19,25 @@ jobs:
         python-version: [3.8, 3.9, "3.10", 3.11]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install flake8
+        pip install flake8 isort
         pip install -r requirements.txt
     - name: Lint with flake8
       run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+        flake8 . --max-complexity=10 --max-line-length=127
+    - name: Verify sorted imports
+      run: |
+        isort . -m HANGING_INDENT -l 120 --check-only
     - name: Test installation
+      run: |
         python3 -m pip install .
     - name: Test usage
+      run: |
         python3 -m pyipsw