feat(ci): create doc PRs, maybe?

.github/workflows/dreamhost-preview-static.yaml

@@ -3,6 +3,10 @@ name: Build and deploy to preview
 on:
   push
 
+concurrency:
+  group: 'preview'
+  cancel-in-progress: true
+
 jobs:
   deploy:
     runs-on: ubuntu-latest
@@ -13,6 +17,7 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
+          version: 9
           run_install: false
 
       - name: Install Node.js