fix(eks): Changing EKS helm chart handler runtime from Python 3.7 to 3.8

[youngjeong46]

Currently the Helm Chart handler for aws-eks package is using Python 3.7. We have seen, as from the issue listed below, that there are issues with certificates that won't be accepted when running with Python 3.7 (i.e. JupyterHub).

This PR replaces the Lambda Handler for Helm Chart runtime from Python 3.7 to 3.8.
Closes #25747.

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[kaizencc]

@youngjeong46 thanks for the PR! Are you able to continue working on this? There are quite a few integration tests that are failing because they need to be tested with python 3.8.

I don't think I can do them for you because you're on your own main branch so if you don't have the time I can spin up my own PR and update the runtime.

[youngjeong46]

@youngjeong46 thanks for the PR! Are you able to continue working on this? There are quite a few integration tests that are failing because they need to be tested with python 3.8.

I don't think I can do them for you because you're on your own main branch so if you don't have the time I can spin up my own PR and update the runtime.

@kaizencc Can you work on the PR? I keep running out of heap space on all of my environments building integration tests.

[kaizencc]

@youngjeong46 I can't do them on this PR, so I'd have to open a new one.

If you're running out of heap space, you can try export NODE_OPTIONS="--max-old-space-size=8192" && npx lerna run build --scope=aws-cdk-lib

[rix0rrr]

Or create a branch in your fork, and change the PR to be based off the branch.

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