[DOP-13855] Add note about new JDBC driver to CHANGELOG

Signed-off-by: Мартынов Максим Сергеевич <[email protected]>

docs/changelog/0.11.0.rst

@@ -14,6 +14,14 @@ most of users will not see any differences.
 
   This brings up several fixes for Spark <-> Clickhouse type compatibility, and also Clickhouse clusters support.
 
+  .. warning::
+
+    New JDBC driver has a more strict behavior regarding types:
+
+    * Old JDBC driver applied ``max(1970-01-01T00:00:00, value)`` for Timestamp values, as this is a minimal supported value of ``DateTime32`` Clickhouse type. New JDBC driver doesn't.
+    * Old JDBC driver rounded values with higher precision than target column during write. New JDBC driver doesn't.
+    * Old JDBC driver replaced NULLs as input for non-Nullable columns with column's DEFAULT value. New JDBC driver doesn't. To enable previous behavior, pass ``Clickhouse(extra={"nullsAsDefault": 2})`` (see `documentation <https://clickhouse.com/docs/en/integrations/java#configuration>`_).
+
 - Update other JDBC drivers to latest versions:
     * MSSQL ``12.2.0`` → ``12.6.2`` (:github:pull:`254`).
     * MySQL ``8.0.33`` → ``8.4.0`` (:github:pull:`253`, :github:pull:`285`).