update Release.yml

Author: Rufus31415

.github/workflows/Release.yml

@@ -12,8 +12,13 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
+    - name: Set up Python
+      uses: actions/setup-python@v3
+      with:
+        python-version: '3.x'
     - name: Build and publish
       run: |
+        python -m pip install --upgrade pip
         pip install twine
         python setup.py sdist bdist_wheel
         twine upload dist/* -u __token__ -p $PYPI_TOKEN