fix(test.yml): add run key to pagefind (#1038)

Author: maiieul

.github/workflows/test.yml

@@ -49,6 +49,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # GITHUB_TOKEN is provided automatically in any repository
 
   pagefind:
+    runs-on: ubuntu-latest
     steps:
       - name: Generate
       - run: npx pagefind --site dist/apps/website/client && cp -r dist/apps/website/client/pagefind apps/website/public/pagefind