Update changelog for v4.13 release

NoahStapp · NoahStapp · commit b00d37cd4ab3 · 2025-05-14T13:28:41.000-04:00
diff --git a/doc/changelog.rst b/doc/changelog.rst
@@ -6,6 +6,7 @@ Changes in Version 4.13.0 (2025/05/14)
 
 PyMongo 4.13 brings a number of changes including:
 
+- The asynchronous API is now stable and no longer in beta.
 - Fixed a bug where :class:`pymongo.write_concern.WriteConcern` repr was not eval-able
   when using ``w="majority"``.
 
