Update pyproject.toml to reflect support for earlier Django versions

Author: Andy Babic

pyproject.toml

@@ -18,6 +18,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Framework :: Django",
+    "Framework :: Django :: 4.2",
     "Framework :: Django :: 5.1",
     "Framework :: Wagtail",
     "Framework :: Wagtail :: 6",
@@ -26,7 +27,7 @@ classifiers = [
 dynamic = ["version"]
 requires-python = ">=3.11"
 dependencies = [
-    "Django>=5.0",
+    "Django>=4.2",
 ]
 
 [project.optional-dependencies]