Revert "remove reference to static-gitlab-shim-pull script"

    - merge_requests

```

## Deploy artifacts manually

If a site is not deploying normally, it's still possible to deploy a

site by hand by downloading and extracting the artifacts using the

`static-gitlab-shim-pull` script.

For example, given the [Pipeline 13285](https://gitlab.torproject.org/tpo/tpa/status-site/-/pipelines/13285) has [job 38077](https://gitlab.torproject.org/tpo/tpa/status-site/-/jobs/38077), we can

tell the puller to deploy in debugging mode with this command:

    sudo -u static-gitlab-shim /usr/local/bin/static-gitlab-shim-pull --artifacts-url https://gitlab.torproject.org/tpo/tpa/status-site/-/jobs/38077/artifacts/download --site-url status.torproject.org --debug

The `--artifacts-url` is the `Download` link in the job page. This

will:

 1. download the artifacts (which is a ZIP file)

 2. extract them in a temporary directory

 3. `rsync --checksum` them to the actual source directory (to avoid

    spurious timestamp changes)

 4. call `static-update-component` to deploy the site

Note that this script was part of the webhook implementation and might

eventually be retired if that implementation is completely

removed. This logic now lives in the [`static-shim-deploy.yml`

template][].

## Converting a job from Jenkins

NOTE: this shouldn't be necessary anymore, as Jenkins was retired at