Auto merge of #5580 - matthiaskrgr:regex_dep, r=flip1995
Auto merge of #5580 - matthiaskrgr:regex_dep, r=flip1995

deps: remove unused regex dependency from root crate

changelog: none

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