Include wagtail 6.0 and django 5.0 in test matrix

tox.ini

@@ -2,9 +2,9 @@
 skipsdist = True
 usedevelop = True
 envlist =
-    python{3.8,3.9,3.10}-django{3.2,4.1}-wagtail{4.1,5.0,5.1,main}-{sqlite,postgres}
-    python3.11-django4.1-wagtail{4.1,main}-{sqlite,postgres}
-    python{3.8,3.9,3.10,3.11}-django{4.1,4.2}-wagtail{5.0,5.1,main}-{sqlite,postgres}
+    python{3.8,3.9,3.10,3.11}-django{3.2,4.1}-wagtail{4.1,5.0,5.1,5.2}-{sqlite,postgres}
+    python{3.8,3.9,3.10,3.11}-django{4.1,4.2}-wagtail{5.0,5.1,5.2}-{sqlite,postgres}
+    python{3.8,3.9,3.10,3.11}-django{4.2,5.0}-wagtail{5.2,6.0,main}-{sqlite,postgres}
 
 [gh-actions]
 python =
@@ -33,10 +33,13 @@ deps =
     django3.2: Django>=3.2,<4.0
     django4.1: Django>=4.1,<4.2
     django4.2: Django>=4.2,<5.0
+    django5.0: Django>=5.0,<5.1
 
     wagtail4.1: wagtail>=4.1,<4.2
     wagtail5.0: wagtail>=5.0,<5.1
     wagtail5.1: wagtail>=5.1,<5.2
+    wagtail5.2: wagtail>=5.2,<6.0
+    wagtail6.0: wagtail>=6.0,<6.1
     wagtailmain: git+https://github.com/wagtail/wagtail.git
 
     postgres: psycopg2