ci: fix GHCR login username (PM-Labs, not github.actor)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: mdrokon-dev

.github/workflows/ci.yaml

@@ -91,7 +91,7 @@ jobs:
       - name: Deploy to droplet
         run: |
           ssh ${{ secrets.DEPLOY_USER }}@${{ secrets.DEPLOY_HOST }} \
-            "echo '${{ secrets.GHCR_TOKEN }}' | docker login ghcr.io -u '${{ github.actor }}' --password-stdin \
+            "echo '${{ secrets.GHCR_TOKEN }}' | docker login ghcr.io -u 'PM-Labs' --password-stdin \
             && cd /opt/pmin-mcpinfrastructure \
             && docker compose pull nanobanana \
             && docker compose up -d --force-recreate nanobanana \