ci: bump deprecated github pages actions to current majors

actions/upload-pages-artifact@v1 transitively pulled in
actions/upload-artifact@v3 which GitHub auto-fails since April 2024.
Bump pages-related actions (checkout v3→v4, configure-pages v2→v5,
upload-pages-artifact v1→v3, deploy-pages v1→v4) to unblock the
Hugo deploy workflow.

Author: ShortArrow

.github/workflows/hugo.yml

@@ -40,12 +40,12 @@ jobs:
       - name: Install Dart Sass Embedded
         run: sudo snap install dart-sass-embedded
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: Setup Pages
         id: pages
-        uses: actions/configure-pages@v2
+        uses: actions/configure-pages@v5
       - name: Install Node.js dependencies
         run: "[[ -f package-lock.json || -f npm-shrinkwrap.json ]] && npm ci || true"
       - name: Build with Hugo
@@ -58,7 +58,7 @@ jobs:
             --minify \
             --baseURL "${{ steps.pages.outputs.base_url }}/"
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           path: ./public
 
@@ -72,7 +72,7 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v4
   markdown-link-check:
     runs-on: ubuntu-latest
     steps: