fix: use ACTIONS_DEPLOY_ACCESS_TOKEN for repo checkout

Will create proper token strategy (GitHub App + machine user) separately.
For now, use existing org-level PAT.

Author: westover

.github/workflows/deploy.yml

@@ -25,7 +25,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: neherdata/nds_server
-          token: ${{ secrets.NDS_HELPER_TOKEN }}
+          token: ${{ secrets.ACTIONS_DEPLOY_ACCESS_TOKEN }}
           path: nds_server
 
       - name: Setup Tailscale