Fix django-stubs[compatible-mypy] reference

requirements.txt

@@ -1,7 +1,7 @@
 dj-database-url>=2.1.0
 django-browser-reload>=1.12.1
 django-htmx>=1,<2
-django-stubs[compatible-mypy]>=5.0.3
+django-stubs[compatible-mypy]>=4.2.7
 django>=5,<6
 djlint>=1.34.1
 gunicorn>=21,<22