feat(ecs): add Amazon Linux 2023 to EcsOptimizedImage

[layertwo]

Add support for selecting Amazon Linux 2023 ECS Optimized images.

Reference: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/retrieve-ecs-optimized_AMI.html

Closes #26988.

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[aws-cdk-automation]

The pull request linter has failed. See the aws-cdk-automation comment below for failure reasons. If you believe this pull request should receive an exemption, please comment and provide a justification.

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[layertwo]

Exemption Request:

This is an expansion of the existing capability for EcsOptimizedImage, and not a whole new feature that would require changes to an integration test or README.

[layertwo]

@pahud would you be willing to review this? re: #26988

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[mergify]

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[aws-cdk-automation]

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• Commit ID: 9a4ccb8
• Result: SUCCEEDED
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[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).