Merge pull request #64 from arduino/linter_workflow

misc: Update linter workflow.

.github/workflows/python-linter.yml

@@ -15,23 +15,21 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
-      matrix:
-        python-version: ["3.8", "3.9", "3.10"]
 
     steps:
     - name: '⏳ Checkout repository'
       uses: actions/checkout@v3
 
-    - name: '🐍 Set up Python ${{ matrix.python-version }}'
-      uses: actions/setup-python@v3
+    - name: '🐍 Set up Python'
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python-version }}
+        cache: 'pip'
+        python-version: "3.10"
 
     - name: '🛠 Install dependencies'
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        python -m pip install flake8==6.0.0 pytest==7.4.0
 
     - name: '😾 Lint with flake8'
       run: |