Dialyzer warnings from list_secret/1 and create_secret/1

[fmterrorf]

The list_secret/1 typespec https://github.com/ex-aws/ex_aws_secretsmanager/blob/master/lib/ex_aws/secretsmanager.ex#L93-L98 indicates that it only accepts the following as an argument

  @type list_secrets_opts :: [
          {:max_results, integer} | {:next_token, binary}
        ]

The ListSecret API now accepts parameters such as Filters, SortOrder and others see https://docs.aws.amazon.com/secretsmanager/latest/apireference/API_ListSecrets.html.

Maybe we should just drop the list_secret_opts typespec or update it so that Dialyzer doesn't get mad