Update pythonpublish.yml

Author: hlouzada

.github/workflows/pythonpublish.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-18.04
     steps:
     - uses: actions/checkout@master
-    - name: Set up Python 3.7
+    - name: Set up Python 3.x
       uses: actions/setup-python@v1
       with:
         python-version: 3.x