bump(carta-investors): 7f18fbaa → 839c97f6 (#4482)

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

.claude-plugin/marketplace.json

@@ -690,7 +690,7 @@
         "url": "https://github.com/carta/plugins.git",
         "path": "plugins/carta-investors",
         "ref": "main",
-        "sha": "7f18fbaa9321fa377ede3b65a6791b3e458627d2"
+        "sha": "839c97f67d208d66dd0b5992d7b9ee3b3e7be93c"
       },
       "homepage": "https://carta.com"
     },