Fix graph proxy container CI

Author: garryod

.github/workflows/ci.yaml

@@ -44,7 +44,7 @@ jobs:
     # Deduplicate jobs from pull requests and branch pushes within the same repo.
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.repository
     needs: graph_proxy_code
-    uses: ./.github/workflows/_sessionspaces_container.yaml
+    uses: ./.github/workflows/_graph_proxy_container.yaml
     permissions:
       contents: read
       packages: write