Update k8s version to 1.31

[za]

Reason: some of the CSP is ending support for k8s 1.30

What kind of changes does this PR include?

• Fixes or refactors
• A new challenge
• Additional documentation
• Something else

Description

Update k8s version to 1.31

Relations

#1848

Checklist:

• All the contributions made are solely the work of me and my co-authors
• I tested the changes in this PR (if applicable)
• I added unit tests to ensure my change works (when change in Java or on front-end code)
• I added UI tests to ensure my UI changes work (when change in the overall UI, not needed if just adding a challenge)
• The PR passes pre-commit hooks and automated tests

[za]

Hi @commjoen kindly check the PR.

[commjoen]

Hi @za ! Thank you for the PR! Did you test this on the cloud providers?

[za]

Hi @za ! Thank you for the PR! Did you test this on the cloud providers?

No, I haven't tested it @commjoen

[commjoen]

Hi @za ! Thank you for the PR! Did you test this on the cloud providers?

No, I haven't tested it @commjoen

I guess they first need to be tested before we can continue .

[za]

I guess they first need to be tested before we can continue .

I'll find a time to test @commjoen

In the mean time, I can see that all 16 github actions tests are passed ✅