version 32.0.0 fails to parse kube config file properly, kube_config:520 Object of type ConfigNode is not JSON serializable

[jwiebema1]

version 32.0.0 fails to parse kube config file properly

kube_config.py fails to parse kubeconfig file.
line 520: Object of type ConfigNode is not JSON serializable

What you expected to happen:
It should be able to parse old kubeconfig files, this works fine in 31.0.0

How to reproduce it (as minimally and precisely as possible):
I can't attach my kubeconfig because I don't have good way to obfuscate it

Anything else we need to know?:

Environment:

• Kubernetes version (kubectl version):

  kubectl version
  Client Version: v1.32.1
  Kustomize Version: v5.5.0
  Server Version: v1.31.5-gke.1023000

• OS (e.g., MacOS 10.13.6):
  MacOs 14.6.1

• Python version (python --version)
  Python 3.9.18

• Python client version (pip list | grep kubernetes)
  32.0.0

[ydixken]

Same issue as #2334

[roycaihw]

Closing as a duplicate of #2334