Update whats new for rc11 (#1650)

* Update whats_new.rst for rc11.

* Correct PR number.

docs/about/whats_new.rst

@@ -8,9 +8,11 @@ What's New
 v1.9.next
 =========
 
-v1.9.0-rc10 (25th October 2024)
+v1.9.0-rc11 (28th October 2024)
 ===============================
 
+(Replaces rc10 which was a bungled pre-release.)
+
 - Permissions management cleanup in postgis driver. (:pull:`1613`)
 - Add `skip_broken_datasets` and `dc_load_limit` config options. (:pull:`1616`)
 - Enable global environment variables with `ODC_ALL` naming convention (:pull:`1616`)
@@ -27,6 +29,7 @@ v1.9.0-rc10 (25th October 2024)
 - Fix alembic migrations (:pull:`1645`)
 - Make psycopg2 an optional dependency (:pull:`1648`)
 - Cherry pick recent merged PRs from develop branch and update whats_new for rc10 release. (:pull:`1647`)
+- Update whats_new for rc11 release. (:pull:`1650`)
 
 v1.9.0-rc9 (3rd July 2024)
 ==========================