add 4.2 to readme (#274)

Author: mShan0

README.md

@@ -10,7 +10,7 @@ We hope you enjoy using the MSSQL-Django 3rd party backend.
 
 ## Features
 
--  Supports Django 3.2, 4.0, and 4.1
+-  Supports Django 3.2, 4.0, 4.1 and 4.2
 -  Tested on Microsoft SQL Server 2016, 2017, 2019, 2022
 -  Passes most of the tests of the Django test suite
 -  Compatible with