Bump actions/setup-python from 5 to 6

Author: dependabot[bot]

.github/workflows/publish.yml

@@ -14,7 +14,7 @@ jobs:
       uses: actions/checkout@v5
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: "3.9"
 

.github/workflows/tests.yml

@@ -23,7 +23,7 @@ jobs:
       uses: actions/checkout@v5
 
     - name: Setup Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python }}