Update nimble plugin: remove SHA pin

Allow Nimble to resolve from latest HEAD rather than a pinned commit.

.claude-plugin/marketplace.json

@@ -421,18 +421,6 @@
       },
       "homepage": "https://github.com/astronomer/agents"
     },
-    {
-      "name": "dataverse",
-      "description": "Agent skills for building on, analyzing, and managing Microsoft Dataverse — with Dataverse MCP, PAC CLI, and Python SDK.",
-      "category": "database",
-      "source": {
-        "source": "git-subdir",
-        "url": "https://github.com/microsoft/Dataverse-skills.git",
-        "path": ".github/plugins/dataverse",
-        "ref": "main"
-      },
-      "homepage": "https://github.com/microsoft/Dataverse-skills"
-    },
     {
       "name": "deploy-on-aws",
       "description": "Deploy applications to AWS with architecture recommendations, cost estimates, and IaC deployment.",
@@ -898,8 +886,7 @@
       "description": "Nimble web data toolkit — search, extract, map, crawl the web and work with structured data agents",
       "source": {
         "source": "url",
-        "url": "https://github.com/Nimbleway/agent-skills.git",
-        "sha": "cf391e95bd8ac009e3641f172434a1d130dde7fe"
+        "url": "https://github.com/Nimbleway/agent-skills.git"
       },
       "homepage": "https://docs.nimbleway.com/integrations/agent-skills/plugin-installation"
     },