revert action

Author: Joe Gasewicz

.github/workflows/python-app.yml

@@ -15,7 +15,7 @@ jobs:
 
  steps:
  - uses: actions/checkout@v2
- - name: Set up Python 3.6.15
+ - name: Set up Python 3.6
  uses: actions/setup-python@v2
  with:
  python-version: 3.6