dialyzer.ignore-warnings

## Dialyzer - ignore warnings
##
## leo_s3_endpoint.erl
Cons will produce an improper list since its 2nd argument is none()
## leo_s3_bucket.erl
The pattern 'true' can never match the type 'false'
## leo_s3_user
The pattern [{'user_1', Id, _, _, _, _, _} | Rest] can never match the type []
The pattern [User = {'user_1', Id, _, _, _, _, _} | Rest] can never match the type []