Update actions/setup-python action to v6

Author: renovate[bot]

.github/workflows/ci.yml

@@ -173,7 +173,7 @@ jobs:
       - name: "Check out repository code"
         uses: "actions/checkout@v4"
       - name: "Set up Python"
-        uses: "actions/setup-python@v5"
+        uses: "actions/setup-python@v6"
         with:
           python-version: "3.10"
       - name: "Install Python Packages"
@@ -219,7 +219,7 @@ jobs:
       - name: "Check out repository code"
         uses: "actions/checkout@v4"
       - name: "Set up Python"
-        uses: "actions/setup-python@v5"
+        uses: "actions/setup-python@v6"
         with:
           python-version: "3.10"
       - name: "Install Python Packages"