ci: docs: deploy directly, rather than via gh_pages branch

.github/workflows/pages.yml

@@ -14,8 +14,21 @@ on:
   schedule:
     - cron: "50 * * * *"
 
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+
 jobs:
-  publish:
+  build:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -56,13 +69,18 @@ jobs:
         run: |
           source $HOME/.cargo/env
           ./ci/build-docs.sh
-      - name: Deploy
-        if: success()
-        uses: crazy-max/ghaction-github-pages@v3
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v1
         with:
-          target_branch: gh-pages
-          build_dir: gh_pages/html
-          keep_history: true
-          allow_empty_commit: false
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          path: gh_pages/html
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy
+        id: deployment
+        uses: actions/deploy-pages@v1