Assets renamed in next release of govuk_frontend_toolkit

[gemmaleigh]

This repo uses the accordion icon from the govuk_frontend_toolkit.

The spelling of this icon has been corrected in the next release of the frontend toolkit - version 5.0.0.

Please be aware that when this repo is updated to use the latest version of the frontend toolkit, the name of this asset will have changed and line 25 in the _historic-people-list.scss will need to be updated accordingly.

whitehall/app/assets/stylesheets/frontend/helpers/_historic-people-list.scss

Line 25 in 19cd7d7

background: transparent image-url("accordian-arrow.png") $full-width -40px no-repeat;

[NickColley]

Closed with #2839 thanks @gemmaleigh @fofr 👍

[fofr]

It was using its own local version. I updated anyway.