Revert `loofah` update
Revert `loofah` update

We need to update other gems as well if we update this one. Dependabot
updated it automatically when updating `foundation_rails_helper`, but it
doesn't seem to be necessary.

consul/consul,consul/consul,consul/consul,usabi/consul_san_borondon,consul/consul,usabi/consul_san_borondon,usabi/consul_san_borondon,consul/consul,usabi/consul_san_borondon