feat(aws-events-target): Enable adding role for sns target to support cross account targets #33782
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Issue
In Jan 2025 AWS announced support cross-account targets for Amazon EventBridge Event Buses. For this to work source event bus rules must have an IAM role that allows them to send events to specific targets.
Currently there is no way to add a role to an SNS target which means that one is unable to add an SNS target from a different account. This pr is to enable adding role when adding an SNS target which follows a similar convention to other targets like Codebuild that allows adding a role
Reason for this change
Without this change unable to add a cross account SNS target for Amazon EventBridge Event Buses using the CDK L2 construct
Description of changes
Updated the SNS target to allow one to include a role.
This follows similar approach to other targets such as Codebuild that allows one to include a role (https://github.com/aws/aws-cdk/blob/main/packages/aws-cdk-lib/aws-events-targets/lib/codebuild.ts#L46)
Description of how you validated changes
Updated Unit and Integration Tests
Checklist
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license