chore(rds): postgres 16.13

[phadadi]

Issue # (if applicable)

None

Reason for this change

https://docs.aws.amazon.com/AmazonRDS/latest/PostgreSQLReleaseNotes/postgresql-versions.html#postgresql-versions-version1613

Description of changes

Describe any new or updated permissions being added

Description of how you validated changes

aws rds describe-db-engine-versions --engine aurora-postgresql --output table --query 'DBEngineVersions[*].{Engine:Engine,EngineVersion:EngineVersion}'

------------------------------------------
|        DescribeDBEngineVersions        |
+--------------------+-------------------+
|       Engine       |   EngineVersion   |
+--------------------+-------------------+
...
|  aurora-postgresql |  16.11            |
|  aurora-postgresql |  16.11-limitless  |
|  aurora-postgresql |  16.13            |
...

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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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