Update vanta-mcp-plugin plugin (#1637)

.claude-plugin/marketplace.json

@@ -1963,8 +1963,7 @@
       "category": "security",
       "source": {
         "source": "url",
-        "url": "https://github.com/VantaInc/vanta-mcp-plugin.git",
-        "sha": "46e5bebf0484f08fc4a3c4054437cf5ec06298c9"
+        "url": "https://github.com/VantaInc/vanta-mcp-plugin.git"
       },
       "homepage": "https://help.vanta.com/en/articles/14094979-connecting-to-vanta-mcp#h_887ce3f337"
     },