[SECURITY UPDATES] fix vulnerability in Sprockets.
[SECURITY UPDATES] fix vulnerability in Sprockets.

Fix via upgrading from 'sprockets' **3.7.1** to **3.7.2**

[MORE DETAILS ABOUT ISSUE](https://groups.google.com/forum/#!topic/rubyonrails-security/ft_J--l55fMhttps://groups.google.com/forum/#!topic/rubyonrails-security/ft_J--l55fM)

[TRELLO CARD](https://trello.com/c/Jiz07vYn/2249-tariff17-rails-security-issue-path-traversal-in-sprockets)

bitzesty/trade-tariff-backend,bitzesty/trade-tariff-backend,bitzesty/trade-tariff-backend