With a time treshold of 4 seconds
and a firstname and lastname honeypot
input fields when signing up

The invitation flow changed a bit, because now
there is no more need to sign in after confirming.
When signing up with a different email address,
the user will see the invitation page straight after
signing up when redirected, without needing to
sign in.

Using the sed script from
https://gitlab.com/gitlab-org/gitlab-ce/issues/59758

https://gitlab.com/gitlab-org/gitlab-ce/issues/23036