Bump actions/setup-python from 1 to 3 (#333)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pypi.yaml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Set up Python
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v3
         with:
           python-version: '3.x'
       - name: Install dependencies