Update main.yml

.github/workflows/main.yml

@@ -9,10 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
-      with:
-        python-version: ${{ matrix.python-version }}
+    - uses: actions/setup-python@v4
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip