update release.yml

update release.yml

Author: achilleas-kal

.github/workflows/release.yml

@@ -9,19 +9,19 @@ jobs:
     runs-on: ubuntu-20.04
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python
-    - uses: actions/setup-python@v2
-     with:
-          python-version: '3.9'
+    - uses: actions/checkout@master
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.7
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install setuptools wheel twine
     - name: Build and publish
       env:
         TWINE_USERNAME: __token__
-        TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN}}
+        TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
       run: |
         python setup.py sdist bdist_wheel
         twine upload dist/*