chore(rds): add support for newer aurora postgresql versions and deprecate out-of-support versions

[veho-mac]

Added newly supported aurora rds postgres versions, as well as deprecated versions no longer supported by aws.

Versions added: 11.20, 11.21, 12.15, 12.16, 13.11, 13.12, 14.9, 15.4.

Aurora Postgres Versions

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[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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[veho-mac]

Exemption Request

These are purely enum changes

[lpizzinidev]

Thanks, looks good to me!
You should change the title to chore(rds): ....
This will also disable linter checks for tests and README updates (not necessary in this case).
Also, can you add a reference to the list of Aurora Postgres versions in the description?

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

[veho-mac]

@lpizzinidev Added your suggestions!

[vinayak-kukreja]

Hey, thank you for opening this PR.

Could you please check if we are using deprecated versions in our unit and/or integ tests. If so, could you update those.

If you are unable to run the integ tests, please let me know and I can run those for you.

[vinayak-kukreja]

@Mergifyio update

[mergify]

update

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[vinayak-kukreja]

Hey, this is great! Thank you for your contribution. I have verified the integ tests.

[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).

Pull request has been modified.

[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).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 25ac0ad
• 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).