chore: Use appropriate mapping of assume_role_policy

[waskow-consensys]

Description

In
https://aws.amazon.com/blogs/security/announcing-an-update-to-iam-role-trust-policy-behavior/
we need to allow the role to assume itself.
Current configuration was set to AWS: "*" with a conditional.
This is detected as a bad policy by AWS, where it flags the trust policy

Overly permissive trust policy exists in your trust relationships
Broad access: Principals that include a wildcard (*, ?) can be overly permissive.

Additionally this "Self Assume" causes IAM looping which can lead to multiple requests, increase cloudtrail audit logs, etc

Motivation and Context

This saves security teams from seeing AWS: "*" and panicking

Breaking Changes

No

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects

• I have executed pre-commit run -a on my pull request

[bryantbiggs]

it is correct as written per the AWS docs, closing since this is not an appropriate change