bump(cockroachdb): fb845eda → 6c96c639 (#4387)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.claude-plugin/marketplace.json

@@ -927,7 +927,7 @@
       "source": {
         "source": "url",
         "url": "https://github.com/cockroachdb/claude-plugin.git",
-        "sha": "fb845eda90ab894f26df7b084f3652e5cef49dd4"
+        "sha": "6c96c6394a61f366e8ec1b7cec2281e97507cbff"
       },
       "homepage": "https://github.com/cockroachdb/claude-plugin"
     },