Add CHANGELOG entry for rails#43284

Author: rafaelfranca

activerecord/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   `#authenticate` returns false when the password is blank instead of raising an error.
+
+    *Muhammad Muhammad Ibrahim*
+
 *   Fix `ActiveRecord::QueryMethods#in_order_of` behavior for integer enums.
 
     `ActiveRecord::QueryMethods#in_order_of` didn't work as expected for enums stored as integers in the database when passing an array of strings or symbols as the order argument. This unexpected behavior occurred because the string or symbol values were not casted to match the integers in the database.