Update GitHub Actions workflow to use latest action versions and Python 3.13

Author: tuna2134

.github/workflows/docs.yml

@@ -10,18 +10,19 @@ jobs:
     name: Deploy document
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: '3.13'
       - name: Build documentation
         run: |
           pip3 install -U .[docs]
           pdoc --html --config show_source_code=False --force voicevox
       
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v4
+        id: deployment
         with:
           path: ./html/voicevox
   deploy:
@@ -36,4 +37,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v4