Fix pypi job checkout version

Author: genzgd

Diff for: .github/workflows/pypi.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v3
 
       - name: Setup Python
         uses: actions/setup-python@v4