Basic authentication was removed but kubectl config set-credentials can set basic auth infos

### What happened?

Basic authentication was removed in v1.19 kubernetes/kubernetes#89069, but kubectl config set-credentials command remains, which can be used to set basic auth infos.
Some users may misuse this command to save password to kubeconfig file, this will lead a password leak issue.

### What did you expect to happen?

Remove the basic auth flags **password**, and update all referenced documents.

### How can we reproduce it (as minimally and precisely as possible)?

example from https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#-em-set-credentials-em-
`kubectl config set-credentials cluster-admin --username=admin --password=uXFGweU9l35qcif`

### Anything else we need to know?

_No response_

### Kubernetes version

```console
$ kubectl version
v1.25+

### Cloud provider

### OS version

```console
# On Linux:
$ cat /etc/os-release
# paste output here
$ uname -a
# paste output here

# On Windows:
C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
# paste output here
```

### Install tools

### Container runtime (CRI) and version (if applicable)

### Related plugins (CNI, CSI, ...) and versions (if applicable)