Merge branch 'ldap' into 'master'

Replace deprecated Devise helper with new helper

Closes #22357

See merge request !6462

app/views/devise/sessions/_new_ldap.html.haml

-= form_tag(user_omniauth_callback_path(server['provider_name']), id: 'new_ldap_user' ) do
+= form_tag(omniauth_callback_path(:user, server['provider_name']), id: 'new_ldap_user') do
   = text_field_tag :username, nil, {class: "form-control top", placeholder: "#{server['label']} Login", autofocus: "autofocus"}
   = password_field_tag :password, nil, {class: "form-control bottom", placeholder: "Password"}
   - if devise_mapping.rememberable?