Automated testing for @kubernetes/client-node

[mook-as]

Problem Description

We get dependabot PRs for bumping @kubernetes/client-node; however, it's unclear at this point whether the newer version of the package will correctly support the older versions of Kubernetes that we support.

Proposed Solution

We should implement automated testing for features that use @kubernetes/client-node and test them against the oldest Kubernetes version we support.

Currently, this includes:

• Credential server E2E tests
• Enable, then disable traefik
• Port forwarding (to Kubernetes services)
• Tray icon changing active Kubernetes context

Additional Information

No response