Use Identity Center SSO for CircleCI Authentication

[mmarcotte]

Instead of using IAM User Tokens, use SSO to authenticate and perform functions needed for the CircleCI user account.

Possible helpful article

https://medium.com/@amimahloof/circle-ci-oidc-token-with-aws-iam-roles-2cccfebe7b6#:~:text=Circle%20CI%20is%20usually%20configured,access%20using%20an%20IAM%20role.