Update font-iosevka from 5.0.9 to 5.1.0 (#3801)
Update font-iosevka from 5.0.9 to 5.1.0 (#3801)

* Update font-iosevka from 5.0.9 to 5.1.0

* Update font-iosevka.rb
alerque/homebrew-fonts,alerque/homebrew-fonts