feat(lambda): add Python 3.13 runtime

[Vandita2020]

Issue # (if applicable)

NA

Reason for this change

Adds Python 3.13 to the available Lambda Runtimes constants

Description of how you validated changes

Have added integration tests to validate the runtime support

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

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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: c709a3d
• Result: SUCCEEDED
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✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

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