Fix startup failure in reusable Quarto workflow

The reusable `.github/workflows/workspace-quarto-site.yml@main` currently fails during workflow validation, before creating any jobs, when called from `allenai/ai-for-science-survey`.

The regression starts at `ce20578496376591b2a1ec11d93761ed8efe2ba1`, which added `pages: read` to the deploy job. GitHub does not accept that permission level for `pages`; callers report `startup_failure` and never produce the required `docs / build` check. Pinning the caller to the preceding `0c4c08925a95e2219ffe49b9843b1f3fa1889c60` revision restored CI immediately: [successful run](https://github.com/allenai/ai-for-science-survey/actions/runs/30678130017).

`allenai/ai-for-science-survey#34` is temporarily pinned to the last valid revision. Please remove the unsupported permission or replace the Pages-URL lookup with a supported least-privilege mechanism, verify a reusable-workflow caller, then unpin affected callers.