fix the selenium version back to <4.3.0

tox.ini

@@ -26,7 +26,7 @@ deps =
     django41: Django>=4.1,<4.2
     django42: Django>=4.2,<5.0
     django50: Django>=5.0,<5.1
-    selenium<=4.16.0
+    selenium<4.3.0
 
 commands = {envpython} tests/manage.py test testapp {posargs}
 setenv = PYTHONPATH = .:{toxworkdir}