[BUG] Python 3.9 is EOL in 6 months, it's still widely referenced

[jdnurmi]

Describe the bug

Obviously people can chase this on their own, but with the EOL of python3.9 coming, it might be good to bump the runtime references in this project if it's still active

https://github.com/search?q=repo%3Aaws-samples%2Faws-security-reference-architecture-examples%20python3.9&type=code

"We are ending support for Python 3.9 in Lambda on December 15, 2025. This follows Python 3.9 End-Of-Life (EOL) reached on October 30, 2025 [1]. End of support does not impact function execution. Your functions will continue to run. However, they will be running on an unsupported runtime which is no longer maintained or patched by the AWS Lambda team."