fix: add ratchet:exclude to unpinned GitHub Actions reference

Co-authored-by: neilime <314088+neilime@users.noreply.github.com>

Author: Copilot

.github/workflows/main-ci.yml

@@ -63,7 +63,7 @@ jobs:
       url: ${{ steps.deployment.outputs.url }}
     steps:
       - id: deployment
-        uses: hoverkraft-tech/ci-github-publish/actions/deploy/github-pages@0.8.0
+        uses: hoverkraft-tech/ci-github-publish/actions/deploy/github-pages@0.8.0 # ratchet:exclude
         with:
           build-path: docs/build
           build-artifact-name: build