Download the bookmarks nightly

.github/workflows/download_pinboard_bookmarks.yml

@@ -0,0 +1,21 @@
+name: Download Pinboard Bookmarks
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * *"
+jobs:
+  rake:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+      - run: bundle exec rake download_pinboard_bookmarks
+      - name: Commit files
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git add site/_pinboard_bookmarks.yml
+          git commit --only site/_pinboard_bookmarks.yml --message "Ran rake download_pinboard_bookmarks in a GitHub Action" || echo "Nothing to commit"
+          git push