Update Zola to 0.20

Author: erikjee

.github/workflows/deploy.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Setup Pages
         uses: actions/configure-pages@v5
       - name: Build and deploy
-        uses: shalzz/zola-deploy-action@v0.18.0
+        uses: shalzz/zola-deploy-action@v0.20.0
         env:
           BUILD_ONLY: true
       - name: Upload artifact