add changelog

Author: michalsn

user_guide_src/source/changelogs/v4.6.1.rst

@@ -34,6 +34,7 @@ Bugs Fixed
 - **Cors:** Fixed a bug in the Cors filter that caused the appropriate headers to not be added when another filter returned a response object in the ``before`` filter.
 - **Database:** Fixed a bug in ``Postgre`` and ``SQLite3`` handlers where composite unique keys were not fully taken into account for ``upsert`` type of queries.
 - **Database:** Fixed a bug in the ``OCI8`` and ``SQLSRV`` drivers where ``getVersion()`` returned an empty string when the database connection was not yet established.
+- **Logger:** Fixed a bug where the ``{line}`` variable couldn't be used without specifying the ``{file}`` variable when logging the message.
 
 See the repo's
 `CHANGELOG.md <https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md>`_