Update pythonpublish.yml

Author: hlouzada

.github/workflows/pythonpublish.yml

@@ -11,7 +11,7 @@ jobs:
     name: Build and publish Python 🐍 distributions 📦 to TestPyPI
     runs-on: ubuntu-18.04
     steps:
-    - uses: actions/checkout@development
+    - uses: actions/checkout@master
     - name: Set up Python 3.x
       uses: actions/setup-python@v1
       with: