chore(renovate): disable js-yaml auto-updates, managed manually

Author: actions-user

.github/renovate.json

@@ -754,6 +754,13 @@
         "github.com/prometheus/client_golang"
       ],
       "sourceUrl": "https://github.com/prometheus/client_golang"
+    },
+    {
+      "description": "Disable js-yaml updates — pinned in overrides for security; managed manually",
+      "matchPackageNames": [
+        "js-yaml"
+      ],
+      "enabled": false
     }
   ]
 }