ci: install graphviz for ERD tests

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: dimitri-yatsenko

.github/workflows/test.yaml

@@ -36,6 +36,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y graphviz
+
       - name: Start services
         run: docker compose up -d db minio --wait
         env: