update actions

Author: fsbraun

.github/workflows/docs.yml

@@ -8,9 +8,9 @@ jobs:
     name: docs
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: 3.12
       - run: python -m pip install -r docs/requirements.txt