Update deploy-mkdocs.yml

.github/workflows/deploy-mkdocs.yml

@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -20,10 +20,10 @@ jobs:
           python -m pip install mkdocs-material mkdocstrings mkdocs-minify-plugin
           if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
           
-      - name: Set up Python 3.7
-        uses: actions/setup-python@v2
+      - name: Set up Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: '3.7'
+          python-version: '3.9'
 
       - name: Deploy with MkDocs
         run: mkdocs gh-deploy