set python version and rollback python action

Author: DomAmato

.github/workflows/publish.yml

@@ -2,17 +2,19 @@ name: Upload Python Package
 
 on:
   release:
-    types: [published]
+    types: [released]
 
 jobs:
   deploy:
     runs-on: ubuntu-latest
+
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python
-      uses: actions/setup-python@v2.0.2
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v2
       with:
-        python-version: '3.x'
+        python-version: '3.7'
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip