bump(carta-investors): a26da268 → 6a712b6d (#5456)

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

.claude-plugin/marketplace.json

@@ -721,7 +721,7 @@
         "url": "https://github.com/carta/plugins.git",
         "path": "plugins/carta-investors",
         "ref": "main",
-        "sha": "a26da2682642a04a5ddb0bffd89c596bb931230b"
+        "sha": "6a712b6d35742a7c20e4b46f2112d9f306661b9e"
       },
       "homepage": "https://carta.com"
     },