build: deploy to the static branch again using JamesIves/github-pages…

…-deploy-action, part of #4

.github/workflows/deploy.yml

@@ -1,30 +1,32 @@
-name: Build and deploy Jekyll site to GitHub Pages
+name: Build Jekyll site and deploy static HTML to the "static" branch
 
 on:
   workflow_dispatch:
   push:
     branches:
       - master
-permissions:
-  contents: read
-  pages: write
-  id-token: write
 
 jobs:
-  build:
+  build-and-deploy:
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: ruby/setup-ruby@v1
+
+      - name: Setup Ruby and dependencies
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: '3'
-          bundler-cache: true  # runs 'bundle install' and caches installed gems automatically
-      - uses: actions/configure-pages@v5
-      - run: bundle exec jekyll build
-      - uses: actions/upload-pages-artifact@v3
+          bundler-cache: true
 
-  deploy:
-    runs-on: ubuntu-latest
-    needs: build
-    steps:
-      - uses: actions/deploy-pages@v4
+      - name: Build static HTML
+        run: bundle exec jekyll build
+
+      - name: Deploy static HTML to the "static" branch
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          branch: static
+          folder: _site
+          single-commit: true