Bump actions/setup-python from 5 to 6 (#41)

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Author: dependabot[bot]

.github/workflows/pypi.yml

@@ -11,7 +11,7 @@ jobs:
         steps:
             - uses: actions/checkout@v4
             - name: Set up Python
-              uses: actions/setup-python@v5
+              uses: actions/setup-python@v6
               with:
                   python-version: "3.x"
             - name: Install dependencies