Bump actions/setup-python from 5 to 6 (#1187)

Author: perazz

.github/workflows/docs.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v5
-    - uses: actions/setup-python@v5
+    - uses: actions/setup-python@v6
       with:
         python-version: '3.x'
     - name: Install dependencies