feat: Add support for trusted roles in iam-assumable-role-with-oidc

[aacuadras]

Description

Extended functionality of iam-assumable-role-with-oidc to also allow assuming the role by trusted AWS principals

Motivation and Context

In some cases, it's needed to extend the trust policy of a role that gets assumed with OIDC to also be assumed by trusted principals in AWS. In my case, I need to allow some principals to assume the target roles locally without using OIDC, while maintaining the ability for a federated assumed role and without duplicating the role with different trust policies.

Breaking Changes

None

How Has This Been Tested?

• [x] I have updated at least one of the examples/* to demonstrate and validate my change(s)
• [x] I have tested and validated these changes using one or more of the provided examples/* projects
• [x] I have executed pre-commit run -a on my pull request

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