Refactor `Dotenv#with`
Refactor `Dotenv#with`

Use `reduce` instead of `tap` + `each`

Nuru/dotenv,janusnic/dotenv,Donavan/dotenv,spore-sh/spore-rails,GearboxSoftware/dotenv,joemcmahon/dotenv,ooohiroyukiooo/dotenv,Neschur/dotenv,y-yagi/dotenv,sheax0r/dotenv,customink/dotenv,slowjack2k/dotenv,sorah/dotenv,cshaffer/dotenv,rkachowski/dotenv,bkeepers/dotenv