updated CHANGELOG.md
updated CHANGELOG.md

alphagov/trade-tariff-admin,alphagov/trade-tariff-admin,bitzesty/trade-tariff-admin,alphagov/trade-tariff-admin,bitzesty/trade-tariff-admin,bitzesty/trade-tariff-admin,alphagov/trade-tariff-admin,bitzesty/trade-tariff-admin