fix(ci): bump yaml 2.8.0 -> 2.8.3 (latest patch for stack overflow CVE)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: imran-siddique

packages/agent-mesh/packages/mcp-proxy/package.json

@@ -47,7 +47,7 @@
     "@modelcontextprotocol/sdk": "1.29.0",
     "commander": "12.0.0",
     "chalk": "5.3.0",
-    "yaml": "2.8.0",
+    "yaml": "2.8.3",
     "winston": "3.11.0",
     "crypto-js": "4.2.0"
   },