Bump kubernetes-client to 7.0.0

[adietish]

related to

• https://github.com/redhat-developer/intellij-openshift-connector/issues/921
• https://github.com/redhat-developer/intellij-kubernetes/issues/794
• https://github.com/redhat-developer/intellij-knative/issues/257

Support for multiple kubernetes config files will be available in kubernetes-client 7.0 (see https://github.com/fabric8io/kubernetes-client/issues/6240, https://github.com/redhat-developer/intellij-kubernetes/issues/779). We'll have to bump the kubernetes-client 7.0 in all our plugins/libraries

[adietish]

This is a larger change. Kubernetes client now assumes that there are several config files, there's no way to limit yourself to a single one. The process should now work as follows:

• watch all files (Config.getKubeconfigFilenames)
• when a file changes -> create a new config (new ConfigBuilder().build())
• then compare
  • current context
  • all contexts
  • auth token

[adietish]

as of today kubernetes-client 7.0 wasn't released yet.