Update python-app.yml

.github/workflows/python-app.yml

@@ -17,10 +17,11 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v4
-    - name: Set up Python 3
-      uses: actions/setup-python@v3
+    - name: Set up Python3
+      uses: actions/setup-python@v4
       with:
         python-version: "3.x"
+        cache: 'pip'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip