Merge branch 'hotfix/publish-action'

Author: Cobular

Diff for: .github/workflows/publish-to-test-pypi.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build and publish Python 🐍 distributions 📦 to PyPI and TestPyPI
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@2
+      - uses: actions/checkout@v2
       - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with: