Wintun: use new swdevice-based API for upcoming Wintun 0.14

.github/workflows/release.yml

@@ -25,12 +25,13 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-go-
 
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+
       - name: Get dependencies, run test
         run: |
-          # install python3.9
-          sudo add-apt-repository -y ppa:deadsnakes/ppa
-          sudo apt install -y python3.9 python3.9-dev
-
           # fetch python cross compile source files
           mkdir -p bin/python/
           cd bin/python/