Update actions/setup-python action to v7

Author: renovate[bot]

.github/workflows/python-publish.yml

@@ -31,7 +31,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: '3.x'
       - name: Build package

.github/workflows/python.yml

@@ -22,7 +22,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies