Global Cross Account Role Not detected

Playing around with cross account possibilities we noticed that if you edit your Trust Role Policy Document to * instead of an accountid Cloudsploit won't trigger an alert running against it

**### This trigger an alert**

{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":**{"AWS":"arn:aws:iam::1122334455660:root"}**,"Action":"sts:AssumeRole","Condition":{}}]}

**### This one didn't trigger**

{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":**{"AWS":"*"}**,"Action":"sts:AssumeRole","Condition":{}}]}

I believe we could create another check or add principal * into current CrossAccount detection rule.

Start by reproducing the two trust role policy examples and locating the existing cross-account detection rule. Done means a wildcard AWS principal triggers an alert while the account-specific principal continues to trigger its existing alert, with regression coverage for both cases.

Written by the indexing model from the issue text.