www/ruby-actionview70: update to 7.0.4

* Guard against ActionView::Helpers::FormTagHelper#field_name calls with nil
  object_name arguments. For example:

<%= fields do |f| %>
  <%= f.field_name :body %>
<% end %>

  Sean Doyle

* Strings returned from strip_tags are correctly tagged html_safe?

  Because these strings contain no HTML elements and the basic entities are
  escaped, they are safe to be included as-is as PCDATA in HTML content.
  Tagging them as html-safe avoids double-escaping entities when being
  concatenated to a SafeBuffer during rendering.

  Fixes rails/rails-html-sanitizer#124

  Mike Dalessio

(taca)