Upgrade to Wagtail 7.0

requirements/base.txt

@@ -1,6 +1,6 @@
 Django>=5.2,<5.3
 django-dotenv==1.4.2
-wagtail>=6.4,<6.5
+wagtail>=7.0,<7.1
 wagtail-font-awesome-svg>=1,<2
 django-debug-toolbar>=4.2,<5
 django-extensions==3.2.3