chore(deps): update actions/setup-python action to v6

Author: anaconda-renovate[bot]

.github/workflows/tests.yaml

@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
     - name: Set up Python
-      uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5
+      uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
       with:
         python-version: ${{ matrix.python-version }}