ci: move to pages server

.forgejo/workflows/cleanup.yaml

@@ -11,12 +11,11 @@ jobs:
       - name: Environment setup
         run: |
           apk add git nodejs jq coreutils curl tree gawk grep
-      - name: Public repo pull
+      - name: Pages repo pull
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-          token: ${{ secrets.PAGES_TOKEN }}
-          ref: public
+          ref: pages
       - name: Render website
         run: |
           export GITHUB_PR_NAME=$(grep -l ${{ github.sha }} previews/*/git_sha.txt | awk -F '/' '{print $2}')