Add data-engineering to marketplace

.claude-plugin/marketplace.json

@@ -1040,14 +1040,14 @@
       "homepage": "https://github.com/intercom/claude-plugin-external"
     },
     {
-      "name": "fastly-agent-toolkit",
+      "name": "data-engineering",
-      "description": "Fastly development tools and platform skills",
+      "description": "Data engineering plugin - warehouse exploration, pipeline authoring, Airflow integration",
       "source": {
         "source": "url",
-        "url": "https://github.com/fastly/fastly-agent-toolkit.git",
+        "url": "https://github.com/astronomer/agents.git",
-        "sha": "d9ba949011e725be55cae11acc741aa1f1f393d3"
+        "sha": "85d6053b1e21724f9cefb1e3f5219bd54fc77224"
       },
-      "homepage": "https://github.com/fastly/fastly-agent-toolkit/blob/main/README.md"
+      "homepage": "https://github.com/astronomer/agents"
     }
   ]
 }