Feature request: allow configuration of kubectl versions.

**The Problem:**
The Env0 agent is currently on version 1.23. K8s version 1.24 is scheduled for end of life in July of 2023. According to [Env0's own documentation ](https://docs.env0.com/docs/k8s)

```
Supported versions

The kubectl version is 1.23, and the kustomize version is 4.5.4.
It is recommended for the remote cluster not to be more than 1 minor version ahead or behind the client's.
```

This means that anyone using Azure will be outside the recommended compatibility range of the Env0 Kubectl client. Furthermore, it limits any customer upgrades to 1.25 because of the api changes with HPAs in version 1.26.

**The Solution**
IMO, it's unrealistic to imagine that you can satisfy the whims of every one of your clients with a single pre-installed Kubectl version. We run into the same problem with Terraform, but instead of installing any particular version of Terraform, you use tfenv to manage the Terraform binaries. There's [a similar project for kubectl called kbenv](https://github.com/little-angry-clouds/kubernetes-binaries-managers/tree/master/cmd/kbenv) that employs the same usage pattern.

I would _really_ like to see the ability to run whatever kubectl version I need, just like I can do with Terraform.