Update actions/setup-python action to v6

Author: renovate[bot]

.github/workflows/stats.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: '3.14'
 

.github/workflows/update_examples.yml

@@ -18,7 +18,7 @@ jobs:
           ref: dev
           fetch-depth: 0 # otherwise, there would be errors pushing refs to the destination repository.
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.14"