Notice of upcoming Wagtail security releases 6.0.5 and 6.1.2

[gasman]

Hi all,
I'd like to give advance notice that Wagtail 6.0.5 and 6.1.2 will be released on Thursday 30th May, around 1200 UTC, to fix a security defect with severity "moderate".

For details of severity levels, see: https://docs.djangoproject.com/en/dev/internals/security/#how-django-discloses-security-issues