v8: mark v8.queryObjects() as stable

This has been used in the tests for leak testing stably for
over a year. The API is modeled after the Chrome DevTools console API
is unlikely to have breaking changes. It's time to mark it as stable.

Author: joyeecheung

doc/api/v8.md

@@ -367,10 +367,13 @@ for more information about the properties of the object.
 added:
   - v22.0.0
   - v20.13.0
+changes:
+  - version:
+    - REPLACEME
+   pr-url: REPLACEME
+   description: Marking the API stable.
 -->
 
-> Stability: 1.1 - Active development
-
 * `ctor` {Function} The constructor that can be used to search on the
   prototype chain in order to filter target objects in the heap.
 * `options` {undefined|Object}