Update tox.ini

Author: jayvynl

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 requires =
     tox>=4
-env_list = py3.7-django3.2, py{3.8,3.9,3.10,3.11,3.12,3.13}-django{3.2,4.0,4.1,4.2}, py{3.10,3.11,3.12,3.13}-django{5.0,5.1}
+env_list = py3.7-django3.2, py{3.8,3.9}-django{3.2,4.0,4.1,4.2}, py{3.10,3.11,3.12}-django{3.2,4.0,4.1,4.2,5.0,5.1}, py3.13-django{4.1,4.2,5.0,5.1}
 
 [variables]
 code = clickhouse_backend example tests