fix(deps): update dependency fastmcp to v3.20.0

Author: renovate[bot]

package-lock.json

@@ -36,7 +36,7 @@
     "@modelcontextprotocol/sdk": "1.18.2",
     "@trpc/server": "11.6.0",
     "express": "5.1.0",
-    "fastmcp": "3.19.1",
+    "fastmcp": "3.20.0",
     "pangea-node-sdk": "5.6.0",
     "trpc-cli": "0.11.0",
     "zod": "3.25.76"