(cli): add option of role to stackExists call

[scanlonp]

Describe the feature

The stackExists call always uses the deploy role. It may be best to allow configuration to use a different role.

Use Case

Least privilege.

Proposed Solution

Pass a role instead of undefined on this line:

aws-cdk/packages/aws-cdk/lib/api/deployments.ts

Line 433 in fac4a9c

const { stackSdk } = await this.prepareSdkFor(options.stack, undefined, Mode.ForReading);

.

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

2.132.0

Environment details (OS name and version, etc.)

Mac