chore(deps): update actions/checkout action to v5 (#465)

Author: renovate[bot]

.github/workflows/_async_docstrings_check.yaml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v5

.github/workflows/build_and_deploy_docs.yaml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           token: ${{ secrets.APIFY_SERVICE_ACCOUNT_GITHUB_TOKEN }}