mapping aws_ssoadmin

[PatMyron]

prev: #218
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ssoadmin_account_assignment
https://github.com/aws/aws-sdk-go/blob/main/models/apis/sso-admin/2020-07-20/api-2.json

Generating rule for `aws_ssoadmin_permission_set.session_duration`
panic: regexp: Compile(`^(-?)P(?=\d|T\d)(?:(\d+)Y)?(?:(\d+)M)?(?:(\d+)([DW]))?(?:T(?:(\d+)H)?(?:(\d+)M)?(?:(\d+(?:\.\d+)?)S)?)?$`): error parsing regexp: invalid or unsupported Perl syntax: `(?=`