Bad indentation in cloudformation/cognito.yaml

https://github.com/aws-cloudformation/iac-model-evaluation/blob/0fc13f985eeb35c667e4536c474511d643e02f31/cloudformation/cognito.yaml#L43-L53

Was probably meant to be

```yaml
AttributeMapping:
email: EMAIL
given_name: GIVEN_NAME
family_name: FAMILY_NAME
IdpIdentifiers: []
ProviderDetails:
client_id: my.client.id
client_secret: '{{resolve:secretsmanager:arn:aws:secretsmanager:us-east-1:012345678901:secret:my-secret:SecretString:::}}'
attributes_request_method: GET
authorize_scopes: openid
oidc_issuer: 'https://issuer.example.com'

Open cloudformation/cognito.yaml at lines 43-53 and compare the indentation with the proposed YAML in the issue. Validate that the corrected structure parses successfully and that the file matches the intended AttributeMapping, IdpIdentifiers, and ProviderDetails nesting.

Written by the indexing model from the issue text.