bump(carta-investors): fef8528a → a26da268 (#5454)

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": "fef8528acbf87733b8365ee1fcdcd5c16c7e597e"
+        "sha": "a26da2682642a04a5ddb0bffd89c596bb931230b"
       },
       "homepage": "https://carta.com"
     },