Update python-kubernetes to version 12.0.1 / rev 14 via SR 857126
    
    https://build.opensuse.org/request/show/857126
    by user dirkmueller + dimstar_suse
    - update to 12.0.1:
     * Kubernetes API version 1.16.15
      - Resolve regression in metadata.managedFields handling in update/patch requests submitted by older API clients ([#91748](https://github.com/kubernetes/k
      ubernetes/pull/91748), [@apelisse](https://github.com/apelisse)) [SIG API Machinery and Testing]
      - Fix bug where sending a status update completely wipes managedFields for some types. ([#90033](https://github.com/kubernetes/kubernetes/pull/90033), [@
      apelisse](https://github.com/apelisse)) [SIG API Machinery and Testing]
      - The `MutatingWebhookConfiguration` and `ValidatingWebhookConfiguration` APIs have been promoted to `admissionregistration.k8s.io/v1`:
        - `failurePolicy` default changed from `Ignore` to `Fail` for v1
        - `matchPolicy` default changed from `Exact` to `Eq