epiphany: 3.22.5 -> 3.22.6 for security issue

From https://bugzilla.gnome.org/show_bug.cgi?id=752738:

  The page http://whatever.com has access to saved passwords of
  https://whatever.com. This was a very bad idea: it makes it easy to
  intercept passwords stored on secure websites, especially since we
  don't require any user interaction to fill in the password.

No CVE has been assigned as of now.

cc #22549