update url dependency from 1.7.0 to 2.1.0
update url dependency from 1.7.0 to 2.1.0

aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust