feat: Jupyterhub blueprint upgrade

[vara-bonthu]

What does this PR do?

🛑 Please open an issue first to discuss any significant work and flesh out details/direction - we would hate for your time to be wasted.
Consult the CONTRIBUTING guide for submitting pull-requests.

• Upgrading JupyterHub to use latest EKS AMI instead of Ubuntu base ami
• Switch from NVIDIA Operator to NVIDIA Device plugin
• Ensure timeslicing and mig works as expected
• Update docs with instrcutions

Motivation

More

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Mandatory for new blueprints. Yes, I have added a example to support my blueprint PR
• Mandatory for new blueprints. Yes, I have updated the website/docs or website/blog section for this feature
• Yes, I ran pre-commit run -a with this PR. Link for installing pre-commit locally

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[ratnopamc]

LGTM.

[ratnopamc]

I've tested this PR and time slicing works fine.

[asmacdo]

@vara-bonthu Why replace Karpenter with vanilla autoscaler?