changed python and pio setup

.github/workflows/ZeDMD.yml

@@ -36,24 +36,17 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Cache pip
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
-
       - name: Cache PlatformIO
         uses: actions/cache@v4
         with:
           path: ~/.platformio
           key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
 
-      - name: Set up Python
+      - name: Set up PlatformIO
         uses: actions/setup-python@v5
-
-      - name: Install PlatformIO
+        with:
+          python-version: "3"
+          cache: "pip"
         run: |
           python -m pip install --upgrade pip
           pip install --upgrade platformio