Kubernetes Components Update and Code Cleanup

[clementrey-dev]

Description

This PR contains two main changes:

1. Kubernetes Components Version Update

Updates the following components to their latest versions:

• kubectl: 1.25.12 -> 1.31.4
• EKS cluster: 1.25 -> 1.31
• Cluster Autoscaler: v1.21.0 -> v1.31.0

2. Agent Code Cleanup for flake8 validation

• Removes unused task_id variable in run_task function
• Removes trailing whitespace in copyright header

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the docs directory)
• Manually tested
• Made sure the title of the PR is a good description that can go into the release notes
• (Core team) Added labels for change area (e.g. area/controlplane) and kind (e.g. kind/improvement)

BONUS POINTS checklist:

• Backfilled missing tests for code in same general area
• Refactored something and made the world a better place

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: clementrey-dev (0f86af0, 331bca4)