docs(changelog): [train-31] add note about regenerated npm-shrinkwrap.json
docs(changelog): [train-31] add note about regenerated npm-shrinkwrap.json

dannycoates/fxa-auth-db-mysql,mozilla/fxa-auth-db-mysql,eoger/fxa-auth-db-mysql,mozilla/fxa-auth-db-mysql,chilts/fxa-auth-db-mysql,eoger/fxa-auth-db-mysql