bump lego to v4.33.0

fix: implement missing _setup_credentials to unblock nameservers option (#24)

update readme

modernize dockerfile

suppress go cache warning

try build arm wheels

try speed up build

go mod tidy

bump go and python

bump lego to v4.32.0

bump to v4.30.1

bump lego

bump lego

Revert "feat: add nameservers option"

Revert "update docstring"