Update Wagtail dependency to < 3

Cameron Lamb · Cameron Lamb · commit 8fed5b791757 · 2021-01-27T11:16:07.000Z
diff --git a/setup.cfg b/setup.cfg
@@ -22,4 +22,4 @@ include_package_data = true
 packages = find:
 install_requires =
     Django>=2.2, <3.2
-    wagtail>=2.5, <2.12
+    wagtail>=2.5, <3
